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BEGIN:VEVENT
SUMMARY:Chiral kinetic theory in curved spacetime
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-56@cern.ch
DESCRIPTION:Speakers: Dr. MAMEDA\, Kazuya (RIKEN)\nMany-body systems with
chiral fermions exhibit anomalous transport phenomena originated from quan
tum anomalies. Based on quantum field theory\, we derive the kinetic theor
y for chiral fermions interacting with an external electromagnetic field a
nd a background curved geometry. The resultant framework respects the cova
riance under the U(1) gauge\, local Lorentz\, and diffeomorphic transforma
tions. It is particularly useful to study the gravitational or non-inertia
l effects for chiral systems. As the first application\, we study the chir
al dynamics in a rotating coordinate and clarify the roles of the Coriolis
force and spin-vorticity coupling in generating the chiral vortical effec
t (CVE). We also show that the CVE is an intrinsic phenomenon of a rotatin
g chiral fluid\, and thus independent of observer's frame.\n\nhttps://conf
erence-indico.kek.jp:443/indico/event/76/session/7/contribution/56
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/56
END:VEVENT
BEGIN:VEVENT
SUMMARY:Real-Time-Evolution of Heavy-Quarkonium Bound States
DTSTART;VALUE=DATE-TIME:20190625T080500Z
DTEND;VALUE=DATE-TIME:20190625T083000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-28@cern.ch
DESCRIPTION:Speakers: Mr. LEHMANN\, Alexander (Heidelberg University and U
niversity of Stavanger)\nElucidating the production process of heavy quark
bound states is a central goal in heavy-ion collisions [1]. Two central q
uestions exist: Do bound states of heavy quarks form in the early time evo
lution of the glasma? If so\, in which time regime can that happen? An ans
wer requires the development of a non-perturbative treatment of the real-t
ime-dynamics of heavy quarkonia. To answer those questions we have develop
ed a novel real-time formulation [2] of lattice NRQCD [3\,4] to order $1/(
aMq)^2$ where we employ a classical statistical simulation for the early-t
ime dynamics of the gauge fields [5]. Here we present results from a simul
ation of heavy quarkonium dynamics in the glasma. By computing the time-ev
olution of spectral functions of heavy quarkonium channels we expect to id
entify the emergence of bound states and their formation time in the evolv
ing glasma.\n\n[1] G. Aarts et al.\, Eur. Phys. J. A 53 no.5\, 93 (2017)\n
\n[2] A. L.\, A. Rothkopf (in preparation)\n\n[3] G.P. Lepage et al.\, Phy
s.Rev. D 46\, 4052 (1992)\n\n[4] M. Berwein\, N. Brambilla\, S. Hwang\, A.
Vairo\, TUM-EFT 74/15\, 56 pp (2018)\n\n[5] K. Boguslasvki\, A. Kurkela\,
T. Lappi\, J. Peuron\, Phys.Rev. D98 no.1\, 014006 (2018)\n\nhttps://conf
erence-indico.kek.jp:443/indico/event/76/session/11/contribution/28
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/11/contri
bution/28
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydrodynamic fluctuations and fluctuation theorem in heavy-ion col
lisions
DTSTART;VALUE=DATE-TIME:20190625T024500Z
DTEND;VALUE=DATE-TIME:20190625T031000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-29@cern.ch
DESCRIPTION:Speakers: Dr. MURASE\, Koichi (Sophia University)\nRecently th
e effects of hydrodynamic fluctuations\, i.e.\, the thermal fluctuations o
f relativistic hydrodynamics\, on flow observables in high-energy nuclear
collisions are analyzed in event-by-event simulations by dynamical models.
The statistics of the hydrodynamic fluctuations is usually determined by
the fluctuation-dissipation theorem obtained in the global equilibrium. Ho
wever\, in expanding systems such as matter created in the experiments\, t
he fluctuation-dissipation theorem is non-trivial. Fluctuation theorem is
more general theorem that describes the probability distribution of the en
tropy production and is applicable to any non-equilibrium systems. We disc
uss the fluctuation-dissipation relation in expanding systems and its rela
tion to the fluctuation theorem by performing the numerical simulations of
non-linear relativistic fluctuating hydrodynamics assuming the Bjorken fl
ow.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/9/cont
ribution/29
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/9/contrib
ution/29
END:VEVENT
BEGIN:VEVENT
SUMMARY:Phase transitions in matrix models
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-60@cern.ch
DESCRIPTION:Speakers: Dr. RINALDI\, Enrico (Riken)\nWe discuss new results
in the BFSS matrix model and its bosonic variant.\n\nhttps://conference-i
ndico.kek.jp:443/indico/event/76/session/7/contribution/60
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/60
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex Langevin Simulations: Reliability and applications to full
QCD at non-zero density
DTSTART;VALUE=DATE-TIME:20190624T011000Z
DTEND;VALUE=DATE-TIME:20190624T013500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-61@cern.ch
DESCRIPTION:Speakers: Mr. SCHERZER\, Manuel (Institute for theoretical Phy
sics\, Heidelberg University)\nM. Scherzer\, E. Seiler\, D. Sexty and I.-O
. Stamatescu Complex Langevin (Equation) is a well defined method providin
g a general instrument for ab initio\, approximation free studies of reali
stic lattice models even for complex action. The latter include full QCD a
t finite density and CLE appears as the only method presently applied in t
his context. The complexification of the variable space required by a comp
lex action introduces\, however\, special conditions to be satisfied in or
der to ensure correct convergence. Analyzing these conditions led to the d
evelopment of procedures and criteria which allow to control the simulatio
ns and define physical reliability regions. We here develop one essential
condition directly related to the correctness proof to a general criterion
applicable on-line also to QCD and discuss its relation to other criteria
. We also present full QCD CLE results for the transition from the confine
ment to the deconfined phase for $0 \\le \\mu / T_c( \\mu=0) \\le 5$ and f
or observables vs $\\mu$ at high temperature.\n\nhttps://conference-indico
.kek.jp:443/indico/event/76/session/3/contribution/61
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/3/contrib
ution/61
END:VEVENT
BEGIN:VEVENT
SUMMARY:Exploring the QCD phase diagram via reweighting from isospin chemi
cal potential
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-62@cern.ch
DESCRIPTION:Speakers: Mr. SCHMALZBAUER\, Sebastian (ITP\, Goethe Universit
y)\nWe investigate the QCD phase diagram close to the isospin chemical pot
ential axis. Numerical simulations directly along this axis are not hinder
ed by the sign problem and pion condensation can be observed at high enoug
h values of the isospin chemical potential. The possibility of a crossover
transition from this BEC phase to a BCS phase is investigated. We study h
ow the BEC phase boundary evolves in the baryon and strangeness chemical p
otential directions via reweighting in the quark chemical potentials and d
iscuss our results. Furthermore\, we develop an alternative method to appr
oach nonzero baryon chemical potentials. This involves simulations includi
ng auxiliary quarks of an extended isospin doublet and decoupling them by
increasing their mass\, again via reweighting.\n\nhttps://conference-indic
o.kek.jp:443/indico/event/76/session/7/contribution/62
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/62
END:VEVENT
BEGIN:VEVENT
SUMMARY:Confinement/deconfinement phase transition for quarks in the highe
r representation in view of dual superconductivity
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-63@cern.ch
DESCRIPTION:Speakers: Dr. SHIBATA\, Akihiro (Computing Research Center\, K
EK)\nDual superconductor picture is one of the most promising scenarios fo
r quark confinement. We have proposed a new formulation of Yang-Mills theo
ry on the lattice so that the so-called restricted field obtained from the
gauge-covariant decomposition plays the dominant role in quark confinemen
t. This framework improves the Abelian projection in the gauge-independent
manner. For quarks in the fundamental representation\, we have demonstrat
ed some numerical evidences for the dual superconductivity. However\, it i
s known that the expected behavior of the Wilson loop in higher representa
tions cannot be reproduced if the restricted part of the Wilson loop is ex
tracted by adopting the Abelian projection or the field decomposition naiv
ely in the same way as in the fundamental representation. Recentry\, by vi
rtue of the non-Abelian Stokes theorem for the Wilson loop operator\, we h
ave proposed suitable operators constructed from the restricted field only
in the fundamental representation to reproduce the correct behavior of th
e original Wilson loop in higher representations. We have further demonstr
ated by the numerical simulation that the proposed operators well reproduc
e the expected behavior of the original Wilson loop average\, which overco
mes the problem that occurs in naively applying Abelian-projection to the
Wilson loop operator for higher representations. In this talk\, we focus o
n the the confinement and deconfinement phase transition for quarks in the
higher representations at finite temperature in view of the dual supercon
ductivity. By using our new formulation of lattice Yang-Mills theory and n
umerical simulations on the lattice\, we extract the dominant mode for con
finement by decomposing the Yang-Mills field\, and we investigate the Poly
akov loop average\, static quark potential for both Yang-Mills field and d
ecomposed restricted field in both confinement and deconfinement phase at
finite temperature.\n\nhttps://conference-indico.kek.jp:443/indico/event/7
6/session/7/contribution/63
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/63
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Schwinger mechanism with perturbative electric fields
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-64@cern.ch
DESCRIPTION:Speakers: Dr. TAYA\, Hidetoshi (Fudan University)\nI discuss s
pontaneous particle production from the vacuum (the Schwinger mechanism) i
n the presence of a strong slow electric field superimposed by a fast weak
electric field. I analytically/numerically show that a QED analog of the
Franz-Keldysh effect occurs\, which significantly modifies the spectrum of
the produced particles. I also show that a non-trivial spin-dependence ap
pears in the production even without magnetic fields due to the intrinsic
spin-orbit coupling in the Dirac equation if the weak electric field is tr
ansverse with respect to the strong electric field. Implications to experi
ments/observations (e.g. heavy ion collisions\, lasers) and relations to t
he dynamically assisted Schwinger mechanism are also discussed.\n\n[1] H.
Taya "Franz-Keldysh effect in strong-field QED\," PRD 99\, 056006 (2019)\n
\n[2] X.-G. Huang\, M. Matsuo\, H. Taya\, "Spontaneous generation of spin
current from the vacuum by strong electric fields\," arXiv:1904.07593\n\n[
3] X.-G. Huang\, H. Taya\, "Spin-dependent dynamically assisted Schwinger
mechanism\," arXiv:1904.08200\n\nhttps://conference-indico.kek.jp:443/indi
co/event/76/session/7/contribution/64
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/64
END:VEVENT
BEGIN:VEVENT
SUMMARY:The order of phase transition in three flavor QCD with background
magnetic field in crossover regime
DTSTART;VALUE=DATE-TIME:20190626T011000Z
DTEND;VALUE=DATE-TIME:20190626T013500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-65@cern.ch
DESCRIPTION:Speakers: Dr. TOMIYA\, Akio (RIKEN-BNL)\nWe investigate the or
der of phase transition in three flavor QCD with a background U(1) magneti
c field using the standard staggered action with the plaquette gauge actio
n. We perform simulations for three volumes $N_\\sigma=8\,16\,24$ with fix
ed mass $ma=0.030$ and temporal extent $N_\\tau=4$\, which is expected to
show crossover for vanishing magnetic field. We apply physically same magn
itude of magnetic field $\\sqrt{eB}=0.9$ for each volume. We measure the c
hiral condensates and Polyakov loop and calculate their susceptibility and
Binder cumulant. We find that the transition becomes first order like tra
nsition with hysteresis in the Monte-Carlo history from crossover for non-
zero magnetic field on the system.\n\nhttps://conference-indico.kek.jp:443
/indico/event/76/session/12/contribution/65
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/12/contri
bution/65
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Schwinger model in the canonical formulation
DTSTART;VALUE=DATE-TIME:20190626T072000Z
DTEND;VALUE=DATE-TIME:20190626T074500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-66@cern.ch
DESCRIPTION:Speakers: Prof. WENGER\, Urs (University of Bern)\nWe consider
the massive Schwinger model in the canonical formulation using transfer m
atrices in fixed fermion number sectors. The fermion contributions can be
classified according to the discrete\, local fermion occupation numbers wh
ich define specific fermion states. They can be used to expose the vacuum
structure of the theory and the origin of the sign problem at finite fermi
on number density. We construct observables which can be used to calculate
the ground state energy and the spectrum of the theory. Finally\, we disc
uss the relation of the canonical formulation to the fermion loop and ferm
ion bag formulation and comment on possible solutions to the fermion sign
problem.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/1
5/contribution/66
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/15/contri
bution/66
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ginzburg-Landau theory for neutron 3P2 superfluidity in neutron st
ars
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-67@cern.ch
DESCRIPTION:Speakers: Dr. YASUI\, Shigehiro (Keio University)\nThe neutron
3P2 superfluidity is one of the interesting phases inside the neutron sta
rs. In this presentation\, we will discuss their properties based on the G
inzburg-Landau theory derived from the tensor-type interaction between two
neutrons. We will show the strong magnetic effect relevant to the magneta
rs\, the boundary effect near the surface of the neutron stars\, and some
related topological properties.\n\nhttps://conference-indico.kek.jp:443/in
dico/event/76/session/7/contribution/67
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/67
END:VEVENT
BEGIN:VEVENT
SUMMARY:The QCD critical point hunt: new dynamic framework and first simul
ation results
DTSTART;VALUE=DATE-TIME:20190625T020000Z
DTEND;VALUE=DATE-TIME:20190625T024500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-68@cern.ch
DESCRIPTION:Speakers: Dr. YIN\, Yi (MIT)\nThe on-going heavy-ion collision
experiments at RHIC is scanning the baryon-rich regime of the QCD phase d
iagram with an unprecedented precision that would potentially discover the
QCD critical point\, the landmark point in the phase diagram. On the theo
ry front\, conventional hydrodynamic modeling would not be sufficient for
the critical point hunt. Instead\, I will present a novel theoretical fram
ework\, namely "hydro+"\, which couples critical fluctuations to bulk evol
ution of the "fireball" created in heavy-ion collisions. I will show the f
irst results on the numerical simulations of "hydro+"\, and\, if time is p
ermitted\, discuss the interesting connection of "hydro+" to other approac
hes of fluctuating hydrodynamics.\n\nhttps://conference-indico.kek.jp:443/
indico/event/76/session/9/contribution/68
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/9/contrib
ution/68
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shear viscosity of classical fields in Yang-Mills theory
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-69@cern.ch
DESCRIPTION:Speakers: Mr. MATSUDA\, Hidefumi (Graduate school of science\,
Kyoto university)\nThe created matter in the initial stage of relativist
ic heavy ion collisions is described well by the classical Yang-Mills(CYM)
fields. It has been shown that the dynamics of the CYM fields play a sign
ificant role in the realization of an local thermal equilibrium. In this w
ork\, we expect that the CYM fields itself have hydrodynamical property su
ch as transport coefficient in equilibrium. We discuss the shear viscosity
of the classical fields in the CYM theory using the Green-Kubo formula. W
e show that the time correlation function of energy-momentum tensor in equ
ilibrium shows a monotonous decay with an exponential form and the shear v
iscosity can be well evaluated by the contribution from the exponential de
cay.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7/con
tribution/69
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/69
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bulk quantities in nuclear collisions from Color Glass Condensate
and hybrid hydrodynamic simulations
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-34@cern.ch
DESCRIPTION:Speakers: Dr. VEIGA GIANNINI\, Andre (Akita International Univ
ersity and University of Sao Paulo)\nStarting from a running-coupling impr
oved $k_T$-factorized formula of the Color Glass Condensate (CGC) framewor
k\, we calculate bulk observables in several heavy-ion collision systems.
This is done in two ways: first the particle distribution is calculated di
rectly as implied from the CGC model\, and then it is compared to the case
where it is instead used as initial conditions for a hybrid hydrodynamic
simulation. In this way\, it it possible to assess the effects of hydrodyn
amic and hadronic evolution by quantifying how much they change the result
s from a pure initial state approach and\, therefore\, to what extent init
ial condition models can be directly compared to experimental data. We fin
d that although entropy production in subsequent hydrodynamic evolution ca
n increase multiplicity by as much as 50%\, the centrality\, energy\, and
system size dependence of charged hadron multiplicity is only affected at
the $\\sim$5% level (disregarding a single overall - energy and system siz
e independent - normalization) when compared to the pure initial state cas
e. The parameter-free prediction for these dependencies then gives reasona
ble agreement with experimental data whether or not hydrodynamic evolution
is included. On the other hand\, our results are not compatible with the
hypothesis that hydrodynamic evolution is present in large systems\, but n
ot small systems like p-Pb. Moreover\, we find that hydrodynamic evolution
significantly changes the distribution of momentum\, so that observables
such as mean transverse momentum are very different from the initial parti
cle production\, and much closer to measured data. Lastly\, we point out t
hat the onset of a hydrodynamic phase in heavy-ion collisions\, along with
viscous effects\, could\, perhaps\, be further investigated by studying t
he centrality dependence of ratio of the mean $p_T$ across different colli
sion systems with similar collision energy.\n\nhttps://conference-indico.k
ek.jp:443/indico/event/76/session/7/contribution/34
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/34
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gluon propagator in two-color dense QCD: Massive Yang-Mills approa
ch
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-24@cern.ch
DESCRIPTION:Speakers: Dr. SUENAGA\, Daiki (Central China Normal University
)\nWe study the Landau gauge gluon propagators in dense two-color QCD at q
uark chemical potential. In order to take into account the non-perturbativ
e effects in the infrared regime\, we use the massive Yang-Mills theory wh
ich has successfully described the gluon and ghost propagators in the Land
au gauge within the one-loop approximation measured on the lattice. We cou
ple quarks to this theory and compute the one-loop polarization effects. D
ense matter in two-color QCD should possesses the diquark condensate which
is color-singlet\, and hence neither electric nor magnetic screening effe
cts appear at the scale less than the diquark gap. This infrared behavior
explains the lattice results which show the insensitivity of screening mas
ses to the quark density.\n\nhttps://conference-indico.kek.jp:443/indico/e
vent/76/session/7/contribution/24
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/24
END:VEVENT
BEGIN:VEVENT
SUMMARY:Rotating neutron star in strong magnetic fields and the MR relatio
ns
DTSTART;VALUE=DATE-TIME:20190624T031500Z
DTEND;VALUE=DATE-TIME:20190624T034000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-25@cern.ch
DESCRIPTION:Speakers: Ms. WATANABE\, Chinatsu (Saitama University)\nNeutro
n stars are highly magnetized rotating compact stars. In 2010\, a neutron
star named PSR J1614-2230 has a mass of twice the solar mass (1.97$\\pm$0.
04M$\\odot$). In 2013\, a neutron star named PSR J0348+0432 with a mass of
2.01$\\pm$0.04M$\\odot$ was observed. Such massive neutron stars give str
ong constraints on the equation of state (EoS) of neutron star matter. In
this study\, we calculate radius of a neutron star using a perturbative pr
escription for various EoSs and relations of its total mass increased by m
agnetic fields. Also\, we calculate the radius of the neutron star as a fu
nction of its total mass increased by rotation. As for the EoS\, we use RM
F theory. Moreover\, we calculate mass-radius (MR) relation with both rota
tion and magnetic fields using 5 hadronic EoSs. We have the results of MR
relation with both rotation and magnetic fields have the total mass of ove
r twice the solar mass for all 5 hadronic EoSs.\n\nhttps://conference-indi
co.kek.jp:443/indico/event/76/session/4/contribution/25
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/4/contrib
ution/25
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lattice field theory with torsion
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-26@cern.ch
DESCRIPTION:Speakers: Mr. IMAKI\, Shota (The University of Tokyo)\nWe form
ulate lattice field theory with dislocation. The dislocation realizes the
spacetime torsion in the continuum limit. As the first application\, we pe
rform the numerical computation to analyze the generation of the current i
nduced by the screw dislocation\, which we call the “chiral torsional ef
fect”.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7
/contribution/26
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/26
END:VEVENT
BEGIN:VEVENT
SUMMARY:In-medium heavy quark potential from lattice QCD and the generaliz
ed Gauss-law
DTSTART;VALUE=DATE-TIME:20190625T074000Z
DTEND;VALUE=DATE-TIME:20190625T080500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-21@cern.ch
DESCRIPTION:Speakers: Dr. ROTHKOPF\, Alexander (University of Stavanger)\n
In this talk I report on recent progress in the determination of the compl
ex heavy quark potential from lattice QCD simulations [1] and show how its
temperature dependence can be captured in an analytic parametrization bas
ed on an improved generalized Gauss law model [2]. Prospects for in-medium
quarkonium phenomenology are discussed.\n\n[1] P. Petreczky\, A.R.\, J.We
ber\, NPA982 (2019) 735 and in progress\n\n[2] D. Lafferty\, A.R. in prepa
ration\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/11/
contribution/21
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/11/contri
bution/21
END:VEVENT
BEGIN:VEVENT
SUMMARY:Center symmetry and the sign problem of finite density lattice gau
ge theory
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-48@cern.ch
DESCRIPTION:Speakers: Dr. EJIRI\, Shinji (Niigata University)\nWe study th
e phase transition of quantum chromodynamics (QCD) at finite temperature a
nd density by focusing on the probability distribution function of quark d
ensity. The phase transition of QCD is expected to change its properties a
s the density changes\, and the probability distribution function gives im
portant information for understanding the nature of the phase transition.
The numerical simulation of QCD at high density has the serious problem of
"sign problem". In this study\, we consider the center symmetry\, which i
s important for understanding the phase transition of lattice gauge theory
\, and propose a method to avoid the sign problem using the symmetry. In t
his way\, we aim to establish a method to calculate probability distributi
on functions of physical quantities such as quark density by numerical sim
ulation.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7
/contribution/48
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/48
END:VEVENT
BEGIN:VEVENT
SUMMARY:Axial kinetic theory and spin transport for massive fermions
DTSTART;VALUE=DATE-TIME:20190625T062000Z
DTEND;VALUE=DATE-TIME:20190625T064500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-23@cern.ch
DESCRIPTION:Speakers: Dr. YANG\, Di-Lun (Keio University)\nIn relativistic
heavy ion collisions (HIC)\, not only a strong magnetic field but also st
rong vorticity could be generated. Recent observations of the polarization
of Lambda hyperons have triggered intensive studies for vorticity-induced
polarization and spin dynamics in relativistic fluids. However\, more rec
ent studies suggest that the spin polarization could be possibly led by no
n-equilibrium effects. It is thus desired to construct a quantum transport
theory for investigating non-equilibrium dynamics of spin polarization fo
r massive fermions. Based on the Wigner-function approach\, we derive an a
xial kinetic theory (AKT) for massive fermions as modified Boltzmann equat
ions involving quantum corrections associated with spin and chiral anomaly
\, which can be applied to track the phase-space evolution of both vector/
axial charges and spin polarization in weakly coupled systems. Since spin
of massive fermions is a dynamical degree of freedom\, the AKT involves on
e scalar and one axial-vector kinetic equations with side-jump effects per
tinent to the spin-orbit interaction. In the massless limit\, the AKT also
reproduces the chiral kinetic theory as a well-established quantum kineti
c theory for Weyl fermions and manifests the spin enslavement in such a li
mit. The AKT could have various applications in different physical systems
including the spin transport for strange quarks or for Lambda hyperons in
HIC.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/10/c
ontribution/23
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/10/contri
bution/23
END:VEVENT
BEGIN:VEVENT
SUMMARY:Improved algorithms for generalized thimble method
DTSTART;VALUE=DATE-TIME:20190626T061000Z
DTEND;VALUE=DATE-TIME:20190626T063500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-46@cern.ch
DESCRIPTION:Speakers: Prof. ALEXANDRU\, Andrei (The George Washington Univ
ersity)\nQuestions about quantum field theories at non-zero chemical poten
tial and/or real-time correlators are often impossible to investigate nume
rically due to the sign problem. A possible solution to this problem is to
deform the integration domain for the path integral in the complex plane.
Sampling configurations on these manifolds is challenging. In this talk I
will discuss some of these problems\, present solutions we have found and
the directions we are currently pursuing.\n\nhttps://conference-indico.ke
k.jp:443/indico/event/76/session/14/contribution/46
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/14/contri
bution/46
END:VEVENT
BEGIN:VEVENT
SUMMARY:Relation between chirality imbalance and fermion pair-production u
nder the parallel electromagnetic field
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-47@cern.ch
DESCRIPTION:Speakers: Mr. AOI\, Hayato (Tokyo University of Science)\nTher
e has been recently an increasing interest for study of the chirality imba
lance $n_5$\, which is the difference between right- and left-handed fermi
ons. The chirality imbalance is expected to be arised from the axial anoma
ly and plays a key role to understand anomalous transport phenomena in the
hot/dense quark matter or the Dirac/Weyl semimetals under the magnetic fi
eld. One of interesting transport phenomena in the presence of chirality i
mbalance is the chiral magnetic effect(CME)\, appearance of electric curre
nt in direction of the external magnetic field. However\, the electric fie
ld gives a crucial contribution to the emergence of the chirality imbalanc
e in addition to the magnetic field. In the previous work\, we have studie
d the chirality imbalance and the CME using the analytical solution of the
Dirac equation in the constant magnetic and Sauter-type pulsed electric f
ields\, and found that the time-dependence of the gauge field is essential
ly important for the production of $n_5$. Here\, we try to extend our stud
y to the general time-dependent electric field\, and discuss a relation be
tween $n_5$ and the fermion pair-production from the vacuum. In this talk\
, we study the time evolution of the chirality imbalance and the electric
current under spatially-uniform and parallel electromagnetic field in the
vacuum of massive fermion. For the time-dependence\, we assume the constan
t magnetic field\, but do not impose any specific form for the electric fi
eld with boundary conditions $E(t \\to \\pm \\infty) \\to 0$. We solve the
Dirac equation and calculate vacuum expectation values of the currents wi
th the gauge invariant regularization. In particular\, we find that $n_5$
and CME at $t \\to \\infty$ are solely determined by the probability distr
ibutions of the fermion created non-perturbatively by the electric field.
As a result\, asymptotic forms of $n_5$ and CME consists of a constant par
t and an oscillating part independent of details of intermediate time-depe
ndence of the gauge potential. The non-zero constant term is proportional
to a relativistic velocity and the momentum distribution of the created pa
rticle\, and understood as a classical analogue of the electric current. W
e discuss how the chirality imbalance arises and roles of the electromagne
tic fields in detail.\n\nhttps://conference-indico.kek.jp:443/indico/event
/76/session/7/contribution/47
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/47
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quark-hadron continuity beyond Ginzburg-Landau paradigm
DTSTART;VALUE=DATE-TIME:20190624T063000Z
DTEND;VALUE=DATE-TIME:20190624T065500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-44@cern.ch
DESCRIPTION:Speakers: Dr. HIRONO\, Yuji (Asia Pacific Center for Theoretic
al Physics)\nQuark-hadron continuity [1] is a scenario that hadronic matte
r is continuously connected to color superconductor without phase transiti
ons as the baryon chemical potential increases. This scenario is based on
Landau's classification of phases since they have the same symmetry breaki
ng pattern. We address the question whether this continuity is true as qua
ntum phases of matter\, which requires the treatment beyond Ginzburg-Landa
u description [2\,3]. To examine the topological nature of color supercond
uctor\, we derive a dual effective theory for U(1) Nambu-Goldstone (NG) bo
sons and vortices of the color-flavor locked phase\, and discuss the fate
of emergent higher-form symmetries. The theory has the form of a topologic
al BF theory coupled to NG bosons\, and fractional statistics of test quar
ks and vortices arises as a result of an emergent Z3 two-form symmetry. We
find that this symmetry is not spontaneously broken\, indicating that qua
rk-hadron continuity is still a consistent scenario.\n\n[1] T. Schafer and
F. Wilczek\, Phys.Rev.Lett. 82 (1999) 3956-3959.\n\n[2] Y. Hirono\, Y. Ta
nizaki\, Phys. Rev. Lett.\, in press [arXiv:1811.10608]\n\n[3] Y. Hirono\,
Y. Tanizaki\, [arXiv:1904.08570]\n\nhttps://conference-indico.kek.jp:443/
indico/event/76/session/5/contribution/44
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/5/contrib
ution/44
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chiral soliton lattice in dense matter under rotation
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-45@cern.ch
DESCRIPTION:Speakers: Mr. NISHIMURA\, Kentaro (Keio University)\nWe study
anomaly-induced effects on dense QCD matter under rotation. We show that t
he chiral perturbation theory under rotation has the topological term that
accounts for the chiral vortical effect. We find that\, due to the presen
ce of this new term\, the ground state of QCD under rotation is the chiral
soliton lattice (CSL) for the neutral pion or η' meson. This state is a
periodic array of topological solitons which spontaneously breaks parity a
nd continuous translational symmetries. In particular\, the CSL for the η
' meson is energetically more favorable than the QCD vacuum and that of th
e neutral pion when the baryon chemical potential is much larger than the
isospin chemical potentials.\n\nhttps://conference-indico.kek.jp:443/indic
o/event/76/session/7/contribution/45
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/45
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instability toward the chiral inhomogeneous phase with the functio
nal renormalization
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-42@cern.ch
DESCRIPTION:Speakers: Dr. YOKOTA\, Takeru (High Energy Accelerator Researc
h Organization)\nIn this talk\, we present our functional-renormalization-
group (FRG) study of the collective excitations around the chiral phase tr
ansition line. In particular\, we intensively investigate the sigma-mesoni
c and pionic collective modes around the QCD critical point (CP) by calcul
ating the spectral functions with the FRG. Such an FRG study gives beyond-
mean-field pictures of the collective modes since it incorporates the larg
e fluctuations involved in the second-order phase transition. We find that
one-particle excitation showing tachyonic instability in the sigma-mesoni
c channel appears as the quark chemical potential approaches that of the Q
CD CP from the hadronic phase with a fixed temperature. Such an unstable m
ode has finite momentum\, which suggests the instability associated with t
he transition to the chiral inhomogeneous phase. We give an explanation fo
r the origin of this phenomenon: The level repulsion between the one- and
two-particle modes in the sigma-mesonic channel causes the instability in
the one-particle mode. Since there is no such instability in the pionic ch
annel\, our result suggests the real kink crystal occurs.\n\nhttps://confe
rence-indico.kek.jp:443/indico/event/76/session/7/contribution/42
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/42
END:VEVENT
BEGIN:VEVENT
SUMMARY:String confinement in 2-form lattice gauge theory
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-43@cern.ch
DESCRIPTION:Speakers: Dr. HAYATA\, Tomoya (RIKEN)\nWe study the confinemen
t between vortex strings in a 2-form gauge theory by using the lattice Mon
te Carlo simulation. We calculate the string-antistring potential from the
surface operator of the 2-form gauge field in the abelian 2-form lattice
gauge theory\, which is dual of the abelian Higgs model in continuum limit
. The linear confining potential appears in a confinement phase and it dis
appears in a deconfinement phase. The phase diagram of the theory is also
studied.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7
/contribution/43
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/43
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-Abelian vortices in dense QCD: quark-hadron continuity and non
-Abelian statistics
DTSTART;VALUE=DATE-TIME:20190624T060500Z
DTEND;VALUE=DATE-TIME:20190624T063000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-40@cern.ch
DESCRIPTION:Speakers: Prof. NITTA\, Muneto (Keio University)\nQuark-hadron
continuity was proposed as crossover between hadronic matter and quark ma
tter without a phase transition\, based on the matching of the symmetry an
d excitations in both phases. In the limit of a light strange-quark mass\,
it connects hyperon matter and the color-flavor-locked phase exhibiting c
olor superconductivity. Here\, we argue that three hadronic superfluid vor
tices must combine with three non-Abelian vortices with different colors w
ith the total color magnetic fluxes canceled out through a junction called
a colorful boojum. We prove this based on the Aharonov-Bohm phases of qua
rks around vortices. We then discuss non-Abelian statistics of non-Abelian
vortices based on the Bogoliubov-de Gennes equation and possible applicat
ion to the above continuity.\n\nhttps://conference-indico.kek.jp:443/indic
o/event/76/session/5/contribution/40
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/5/contrib
ution/40
END:VEVENT
BEGIN:VEVENT
SUMMARY:On the multiple thimbles decomposition for the Thirring model
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-41@cern.ch
DESCRIPTION:Speakers: Mr. ZAMBELLO\, Kevin (University of Parma and INFN\,
Gruppo Collegato di Parma)\nLefschetz thimbles regularization is an elega
nt way to overcome the sign problem. By integrating over thimbles\, where
the imaginary part of the action stays constant and can be factored out\,
the sign problem disappears and observables of interest may be computed by
Monte Carlo simulations. Still\, many examples are known so far where the
correct results can only be recovered by taking into account multiple thi
mbles\; therefore one is left with the difficult task of collecting their
contributions. The Thirring model is one of such examples: this theory has
a rich thimble structure and it has been shown that one cannot reproduce
the results of the full theory from the dominant thimble alone. Using the
model as a test bench for the calculation techniques we have developed in
Parma\, we report preliminary results on reproducing the complete results
from multiple thimbles simulations.\n\nhttps://conference-indico.kek.jp:44
3/indico/event/76/session/7/contribution/41
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/41
END:VEVENT
BEGIN:VEVENT
SUMMARY:The chiral phase transition in (2+1)-flavor QCD
DTSTART;VALUE=DATE-TIME:20190626T023000Z
DTEND;VALUE=DATE-TIME:20190626T025500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-35@cern.ch
DESCRIPTION:Speakers: Prof. KARSCH\, Frithjof (Universitaet Bielefeld)\nWe
present recent results on the pseudo-critical and critical behavior in (2
+1)-flavor QCD close to the chiral phase transition temperature.\n\nhttps:
//conference-indico.kek.jp:443/indico/event/76/session/13/contribution/35
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/13/contri
bution/35
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thermal Quarkonium Mass Shift from Euclidean Correlators
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-3@cern.ch
DESCRIPTION:Speakers: Mr. ELLER\, Alexander Maximilian (TU Darmstadt)\nBra
mbilla et al. have derived an effective description of quarkonium with two
parameters: a momentum diffusion term which has been widely explored with
in the community\, and a real self-energy term. We derive a relation betwe
en the self-energy term and Euclidean electric field correlators along a P
olyakov line\, which can directly be studied on the lattice without the ne
ed for analytical continuation. We also discuss the problems in determinin
g the correlator within the scope of the quenched QCD approximation.\n\nht
tps://conference-indico.kek.jp:443/indico/event/76/session/7/contribution/
3
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/3
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pion condensation -chpt versus lattice
DTSTART;VALUE=DATE-TIME:20190626T032000Z
DTEND;VALUE=DATE-TIME:20190626T034500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-2@cern.ch
DESCRIPTION:Speakers: Prof. ANDERSEN\, Jens Oluf (Norwegian University of
Science and Technology)\nIn this talk I will discuss pion condensation and
the phase diagram at finite temperature and isospin density. I will prese
nt results for the quark-meson model and chiral perturbation theory. The r
esults for the phase diagram\, pressure and equation of state are compared
with recent lattice results. I will also present results for pion stars t
hat consist of a Bose condensate of pion electromagnetically neutralized b
y leptons.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session
/13/contribution/2
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/13/contri
bution/2
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thermodynamic properties of QGP at the physical point with the gra
dient flow method.
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-5@cern.ch
DESCRIPTION:Speakers: Prof. KANAYA\, Kazuyuki (Tomonaga Center for the His
tory of the Universe\, University of Tsukuba)\nWe study thermodynamic prop
erties of 2+1 flavor QCD on the lattice applying the method of Makino and
Suzuki based on the gradient flow\, using a nonperturbatively $O(a)$-impro
ved Wilson quark action and the renormalization group-improved Iwasaki gau
ge action. I report on results of the energy momentum tensor and chiral co
ndensate obtained so far from our on-going simulations at the physical poi
nt.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7/cont
ribution/5
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/5
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD Topology to High Temperatures via Improved Reweighting
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-4@cern.ch
DESCRIPTION:Speakers: Mr. JAHN\, P. Thomas (Technische Universität Darmst
adt)\nAt high temperatures\, the topological susceptibility of QCD becomes
relevant for the properties of axion dark matter. However\, the strong su
ppression of non-zero topological sectors causes ordinary sampling techniq
ues to fail\, since fluctuations of the topological charge can only be mea
sured reliably if enough tunneling events between sectors occur. We presen
t an improvement of a technique the we recently developed to circumvent th
is problem based on a combination of gradient flow and reweighting techniq
ues and quote first results of the topological susceptibility in pure SU(3
) Yang-Mills theory up to $7~T_\\mathrm c$.\n\nhttps://conference-indico.k
ek.jp:443/indico/event/76/session/7/contribution/4
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/4
END:VEVENT
BEGIN:VEVENT
SUMMARY:Studying the QCD phase diagram in RHIC-BES at STAR
DTSTART;VALUE=DATE-TIME:20190625T000000Z
DTEND;VALUE=DATE-TIME:20190625T004500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-7@cern.ch
DESCRIPTION:Speakers: Dr. NONAKA\, Toshihiro (Central China Normal Univers
ity)\nExploring the QCD phase structure is one of the ultimate goals of hi
gh-energy heavy-ion colliding experiments. At BNL-RHIC\, the Beam Energy S
can (BES-I) program was carried out from 2010 to 2014\, and many data sets
have been collected by the STAR experiment in various collision energies
from $\\sqrt{s_{NN}} =$ 200 GeV down to 7.7 GeV in Au+Au collisions. In or
der to reduce the uncertainties in the interested energy region (7.7 $\n\n
https://conference-indico.kek.jp:443/indico/event/76/session/8/contributio
n/7
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/8/contrib
ution/7
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conductivity of quark-gluon plasma in the presence of external mag
netic field
DTSTART;VALUE=DATE-TIME:20190626T004500Z
DTEND;VALUE=DATE-TIME:20190626T011000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-6@cern.ch
DESCRIPTION:Speakers: Dr. NIKOLAEV\, Aleksandr (Swansea University)\nWe ex
amine the electric conductivity of quark-gluon plasma in the presence of e
xternal magnetic field B within LQCD formulation for few temperatures in t
he deconfinement phase. Ensembles are generated with dynamical staggered 2
+1 quarks at physical quark masses. At first we measure the electromagneti
c current-current Euclidean correlators along and perpendicular to the mag
netic field\, then extract the conductivity via analytical continuation wi
thin the Backus-Gilbert method. We obtain\, that $\\sigma_\\parallel$ grow
s in the direction of magnetic field and $\\sigma_\\perp$ decreases. Thus
we observe the Chiral Magnetic Effect in quark-gluon plasma.\n\nhttps://co
nference-indico.kek.jp:443/indico/event/76/session/12/contribution/6
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/12/contri
bution/6
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universal scaling of conserved charge in the stochastic diffusion
dynamics
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-9@cern.ch
DESCRIPTION:Speakers: Mr. WU\, Shanjin (Peking University)\nIn this work\,
we explore the Kibble-Zurek scaling of the conserved charge\, using the s
tachastic diffusion dynamics. After determining the characteristic scales
$\\tau_{\\tiny KZ}$ and $l_{\\tiny KZ}$ and properly rescaling the traditi
onal correlation function and cumulant\, we construct universal functions
for both the two-point correlation function $C(y_1-y_2\;\\tau)$ and second
-order cumulant $K(\\Delta y\,\\tau)$ of the conserved charge in the criti
cal regime\, which are insensitive to the initial temperature and a parame
ter in the mapping between 3D Ising model and the hot QCD system near the
critical point.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/se
ssion/7/contribution/9
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/9
END:VEVENT
BEGIN:VEVENT
SUMMARY:Linked cluster expansion method for the SU(3) spin models
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-8@cern.ch
DESCRIPTION:Speakers: Mr. PHAM\, Anh Quang (Goethe University Frankfurt)\n
An $SU(3)$ spin model is often used in the literature as a first step to d
eal with QCD at finite chemical potential. It approximates full lattice QC
D in the strong coupling and large fermion-mass limit. We describe a serie
s expansion method called Linked Cluster Expansion (LCE)\, and how to appl
y it to the spin model. The results are series of several couplings\, whic
h we analyze by generalized Padé approximants\, called Partial Differenti
al Approximants (PDAs). This method allows complex multi-critical behavior
of quark matter to be investigated. We compare our results with those fro
m complex Langevin and flux representation. We also indicate a couple of o
pen problems.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/sess
ion/7/contribution/8
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/8
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex Langevin applied to chiral random matrix model in T-mu pla
ne
DTSTART;VALUE=DATE-TIME:20190624T004500Z
DTEND;VALUE=DATE-TIME:20190624T011000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-49@cern.ch
DESCRIPTION:Speakers: Dr. FUJII\, Hirotsugu (U Tokyo)\nWe examine the $T-\
\mu$ phase diagram in the chiral random matrix model in $T-\\mu$ plane by
checking the correctness condition\, i.e.\, the tail behavior of the ensem
ble distribution\, with varying the matrix size and other model parameters
.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/3/contri
bution/49
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/3/contrib
ution/49
END:VEVENT
BEGIN:VEVENT
SUMMARY:Novel transport phenomena with chirality\, vorticity and magnetic
field
DTSTART;VALUE=DATE-TIME:20190625T053500Z
DTEND;VALUE=DATE-TIME:20190625T062000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-13@cern.ch
DESCRIPTION:Speakers: Prof. LIAO\, Jinfeng (INDIANA UNIVERSITY)\nBy collid
ing heavy ions at high energies\, physicists are able to "break up" nuclea
r particles like protons and neutrons and create a hot "subatomic soup"\,
the quark-gluon plasma (QGP). In recent years\, there have been significan
t interests and progress on the spin degrees of freedom in the QGP fluid.
In particular\, novel transport phenomena arise from the nontrivial interp
lay between quark spin and chirality with extremely strong vorticity and m
agnetic field in heavy ion collisions. In this talk\, a number of fascinat
ing examples will be briefly surveyed. The first is the global polarizatio
n of particle spin from fluid rotation\, demonstrating "fluid spintronics"
on the subatomic scale. The second is the anomalous transport phenomenon
known as the Chiral Magnetic Effect (CME) that has been enthusiastically s
tudied not only in the "subatomic swirls" but also in Dirac and Well semim
etals as well as in atomic\, astrophysical and cosmological systems. The t
alk would also give a more detailed discussion on the ongoing efforts to s
earch for the CME in heavy ion collisions. The pertinent progress in pheno
menological modelings with the recently developed tool of Anomalous-Viscou
s Fluid Dynamics (AVFD) framework will also be presented. We end this talk
with an outlook into the potential opportunity of discovery in the isobar
ic collision experiment.\n\nhttps://conference-indico.kek.jp:443/indico/ev
ent/76/session/10/contribution/13
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/10/contri
bution/13
END:VEVENT
BEGIN:VEVENT
SUMMARY:A more powerful thimble approach to lattice field theories
DTSTART;VALUE=DATE-TIME:20190626T054500Z
DTEND;VALUE=DATE-TIME:20190626T061000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-38@cern.ch
DESCRIPTION:Speakers: Prof. DI RENZO\, Francesco (University of Parma & IN
FN)\nLefschetz thimbles regularisation of (lattice) field theories was put
forward as a possible solution to the sign problem. Despite elegant and c
onceptually simple\, it has many subtleties. Two major ones have to do wit
h most relevant issues: how can one efficiently implement importance sampl
ing on thimbles? how many thimbles should we take into account? As for the
first question\, since a few years we have been working on algorithms in
which one takes into account (complete) steepest ascent paths. We discuss
improvements we devised\, in particular with respect to the flow equation
(which in this approach is the main building block). In the original formu
lation of thimble regularisation\, a single thimble dominance hypothesis w
as put forward: in the thermodynamic limit\, universality arguments could
support a scenario in which the dominant thimble (associated to the global
minimum of the action) captures the physical content of the field theory.
By now we know many counterexamples and we have been pursuing multi-thimb
le simulations ourselves. Still\, a single thimble regularisation would be
the real breakthrough. We report on ongoing work aiming at a substantial
reduction of the number of thimbles to be taken into account (possibly bei
ng left with one single thimble).\n\nhttps://conference-indico.kek.jp:443/
indico/event/76/session/14/contribution/38
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/14/contri
bution/38
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quark mass generation by monopole condensation
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-73@cern.ch
DESCRIPTION:Speakers: Prof. IWAZAKI\, Aiichi (Nishogakusha University)\nWe
show that monopole quark interactions break flavor chiral SU(2) symmetry
as well as\nchiral U(1) symmetry. The interactions induce quark masses whe
n the monopoles condense\neven in the chiral limit (current quark masses v
anish.) The masses are estimated to be\napproximately 20MeV. Thus\, the pi
ons are not massless even in the chiral limit.\nFurthermore\, the presence
of the interactions leads to the fact that the chiral symmetry breaking a
nd the quark confinement simultaneously arises. Because fluctuations of co
lor electric fields are large in dense\nquark matters\, they expel the mon
opole condensation. Then\, the deconfinement of quarks and the restoration
of the chiral symmetry simultaneously arise.\n\nhttps://conference-indico
.kek.jp:443/indico/event/76/session/7/contribution/73
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/73
END:VEVENT
BEGIN:VEVENT
SUMMARY:Measuring chiral susceptibility using gradient flow
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-72@cern.ch
DESCRIPTION:Speakers: Mr. BABA\, Atsushi (University of Tsukuba)\nWe study
the chiral susceptibility in $N_f = 2+1$ full QCD. In the\nlattice gauge
theory with Wilson fermion\, chiral symmetry is explicitly broken. Therefo
re\, we need a non-trivial additive correction to renormalize the chiral s
usceptibility. To avoid this problem\, we use Gradient flow method. Gradie
nt flow method makes us possible to define correctly renormalized chiral s
usceptibility without additive renormalization even if we use Wilson fermi
on. We measure not only disconnected diagram but also connected diagram fo
r chiral susceptibility. This measurement is on finite temperature full QC
D with $N_f=2+1$ Wilson fermion\, and for temperature range 178-348 MeV.\n
\nhttps://conference-indico.kek.jp:443/indico/event/76/session/7/contribut
ion/72
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/72
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD energy-momentum tensor using gradient flow
DTSTART;VALUE=DATE-TIME:20190626T025500Z
DTEND;VALUE=DATE-TIME:20190626T032000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-71@cern.ch
DESCRIPTION:Speakers: Dr. TANIGUCHI\, Yusuke (University of Tsukuba)\nWe s
tudy the energy-momentum tensor in QCD for $N_f$ = 2+1 dynamical quarks. I
n order to tame violation of the translational invariance on lattice we us
e the gradient flow method as a non-perturbative renormalization scheme. W
e adopt two values for the up and down quark mass. One is the physical mas
s with which we measure the one point function of the energy-momentum tens
or and derive the equation of state in QCD. The other is a rather heavy ma
ss of about $m_{ud}\\simeq59$ MeV with $m_{\\pi}/m_{\\rho}\\simeq0.63$. Us
ing the latter gauge configuration we measure correlation functions of the
energy-momentum tensor\, from which we extract some transport coefficient
s. We also measure the chiral condensate and topological charge and study
their temperature dependence.\n\nhttps://conference-indico.kek.jp:443/indi
co/event/76/session/13/contribution/71
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/13/contri
bution/71
END:VEVENT
BEGIN:VEVENT
SUMMARY:The sign problem and the Lefschetz thimbles in two dimensional Hub
bard model
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-70@cern.ch
DESCRIPTION:Speakers: Dr. VALGUSHEV\, Semeon (Brookhaven National Laborato
ry)\nIn the talk we discuss the sign problem and the possibility to allevi
ate it with the help of methods related to Lefschetz thimbles in the space
of complexities field variables. In particular\, we consider two-dimensio
nal Hubbard model at finite density. We analyze the model on the square la
ttice combining semi-analytical study of saddle points and thimbles on a s
mall lattice and results of test Monte-Carlo simulations. We investigate d
ifferent representations of the path integral and find a particular repres
entation which supposedly leads to the presence of a single dominating thi
mble even for large lattices. Finally\, we derive a novel non-Gaussian rep
resentation of the four-fermion interaction term\, which also exhibits dec
reased number of Lefschetz thimbles.\n\nhttps://conference-indico.kek.jp:4
43/indico/event/76/session/7/contribution/70
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/70
END:VEVENT
BEGIN:VEVENT
SUMMARY:Applicability of the complex Langevin method to QCD at finite dens
ity
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-15@cern.ch
DESCRIPTION:Speakers: Dr. TSUTSUI\, Shoichiro (RIKEN)\nThe complex Langevi
n method (CLM) is a promising approach to overcome the sign problem. Here
we examine its applicability to QCD at finite density on a $24^3 \\times 1
2$ lattice with four-flavor staggered fermions around the deconfinement p
hase transition line in the $(T-\\mu)$-plane. While the CLM actually works
at quite large values of $\\mu$\, it fails in the confined phase\, which
appears at lower $\\mu$. This is due to the singular drift problem as one
can understand through the generalized version of the Banks-Casher relatio
n\, which relates the Dirac zero modes to the chiral condensate. This prob
lem was avoided in our previous work in the confined phase because of the
chosen small spatial volume.\n\nhttps://conference-indico.kek.jp:443/indic
o/event/76/session/7/contribution/15
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/15
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum dissipation of quarkonium in quark-gluon plasma: Lindblad
equation approach
DTSTART;VALUE=DATE-TIME:20190625T083000Z
DTEND;VALUE=DATE-TIME:20190625T085500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-32@cern.ch
DESCRIPTION:Speakers: Mr. MIURA\, Takahiro (Osaka University)\nIn heavy io
n collision experiments\, quark-gluon plasma (QGP) is expected to be produ
ced and its physical properties have been discussed. Survival probability
of a quarkonium is sensitive to the Debye screening of color charges in QG
P. The dynamics of quarkonia can be described by master equation for the d
ensity matrix in the open quantum system approach. In this approach\, the
effect of quantum dissipation can be discussed. In contrast\, this effect
cannot be described in a simple ''in-medium" Schroedinger equation approac
h. In our study\, we derive the Lindblad master equation for the relative
motion of a quarkonium in QGP and solve it numerically. From this\, we ana
lyze how the quantum dissipation and the center-of-mass motion of the quar
konium affect the relative motion between the heavy quark antiquark pair.
Finally\, we present the phenomenological implication of the quarkonium dy
namical evolution by solving the master equation in the Bjorken expanding
QGP where the temperature decreases with time.\n\nhttps://conference-indic
o.kek.jp:443/indico/event/76/session/11/contribution/32
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/11/contri
bution/32
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dyon in pure SU(2) Yang-Mills theory with a gauge-invariant mass t
oward confinement-deconfinement phase transition
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-58@cern.ch
DESCRIPTION:Speakers: Dr. NISHINO\, Shogo (Chiba University)\nThe KvBLL in
stantons (calorons) are extensively used to understand confinement-deconfi
nement phase transition in the Yang-Mills theory at finite temperature. Th
e KvBLL instanton is a topological soliton solution of the self-dual equat
ion of the SU(2) Yang-Mills theory on $S^1\\times R^3$ space with instanto
n charge\, which consists of BPS dyons having both electric and magnetic c
harges with non-trivial holonomy at spatial infinity. Recently\, we have f
ound a novel dyon solution as a non-BPS solution of (non self-dual) field
equations of a gauge-scalar model with the radially fixed scalar field in
the adjoint representation. This dyon solution of the gauge-scalar model i
s identified with the topological field configuration of the Yang-Mills th
eory with a gauge-invariant gluon mass term without scalar field\, which i
s regarded as the low-energy effective model of the Yang-Mills theory with
mass gap. This follows from the gauge-independent Higgs mechanism which d
oes not rely on the spontaneous breaking of gauge symmetry. Our dyon has t
he non-vanishing asymptotic value corresponding to the non-trivial holonom
y at spatial infinity to be comparable with the KvBLL dyon. Thus we can pr
opose another scenario for reproducing confinement-deconfinement phase tra
nsition in the Yang-Mills theory at finite temperature based on our dyon s
olution. In this poster we show the existence of such dyons and discuss th
e characteristic properties\, especially the asymptotic holonomy.\n\nhttps
://conference-indico.kek.jp:443/indico/event/76/session/7/contribution/58
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/58
END:VEVENT
BEGIN:VEVENT
SUMMARY:Neutron star equations of state and quark-hadron continuity
DTSTART;VALUE=DATE-TIME:20190624T025000Z
DTEND;VALUE=DATE-TIME:20190624T031500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-11@cern.ch
DESCRIPTION:Speakers: Prof. KOJO\, Toru (Central China Normal University)\
nThe properties of dense QCD matter are delineated through the constructio
n of equations of state which should be consistent with QCD calculations i
n the low and high density limits\, nuclear laboratory experiments\, and t
he neutron star observations. These constraints\, together with the causal
ity condition of the sound velocity\, are used to develop the picture of h
adron-quark continuity in which hadronic matter continuously transforms in
to quark matter (modulo small 1st order phase transitions). The resultant
unified equation of state at zero temperature and - equilibrium\, which we
call Quark-Hadron-Crossover (QHC18 and QHC19)\, is consistent with the me
asured properties of neutron stars and in addition gives us microscopic in
sights into the properties of dense QCD matter.\n\nhttps://conference-indi
co.kek.jp:443/indico/event/76/session/4/contribution/11
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/4/contrib
ution/11
END:VEVENT
BEGIN:VEVENT
SUMMARY:Logarithms in perturbation theory -- NNNLO pressure of cold and de
nse QCD
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-10@cern.ch
DESCRIPTION:Speakers: Mr. SAPPI\, Matias (University of Helsinki)\nI will
present results on computing the pressure of cold and dense QCD matter to
high loop orders in perturbation theory. Such high-order computations are
made possible by resumming contributions from the soft degrees of freedom.
In particular\, I will cover the computation of the nonanalytic logarithm
ic terms appearing at NNNLO for $T=0$\, both the leading logarithm based o
n a paper from 2018 (Phys.Rev.Lett. 121 (2018) no.20\, 202701) as well as
a work-in-progress computation for obtaining the subleading logarithmic te
rm\, which gets distinct contributions from both the resummed soft sector
as well as the hard sector.\n\nhttps://conference-indico.kek.jp:443/indico
/event/76/session/7/contribution/10
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/10
END:VEVENT
BEGIN:VEVENT
SUMMARY:Catalytic effects of QCD monopoles on the phase transitions
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-39@cern.ch
DESCRIPTION:Speakers: Dr. HASEGAWA\, Masayasu (Joint Institute for Nuclear
Research)\nThe existence of monopoles has been theoretically predicted si
nce P. A. M. Dirac introduced the magnetic monopole in quantum mechanics.
Moreover\, a large number of experiments to observe monopoles have been co
nducted. However\, monopoles have not been detected yet. The purpose of th
is research is to find a clue to observe QCD monopoles which closely relat
e to the color confinement by experiments. To find the evidence\, we add t
he classical fields of the monopole and the anti-monopole to the QCD vacuu
m and calculate the Dirac operator of the overlap fermion which preserves
the exact chiral symmetry in the lattice gauge theory from the QCD vacuum.
We then estimate catalytic effects of the additional monopole and anti-mo
nopole on observables by the numerical calculations. In the study of the l
ow temperature\, we have shown that the value of the chiral condensate (de
fined as the minus value) decreases\, the pion decay constant increases\,
and the masses of the light quarks and the mesons become heavy\, by varyin
g the values of the magnetic charges of the additional monopole and anti-m
onopole. Finally\, we have discovered that the decay width of pion becomes
wider and the lifetime of pion becomes shorter than the experimental resu
lts. These are the catalytic effects of monopoles in QCD (arXiv:1807.04808
). In this research\, we add the monopole and anti-monopole to the configu
rations of the finite temperature and investigate catalytic effects of mon
opoles in QCD on quark confinement-deconfinement phase transition\, and ch
iral symmetry breaking and the restoration. We find that the additional mo
nopole and anti-monopole increase the temperature of quark confinement-dec
onfinement phase transition\, moreover\, the restoration of chiral symmetr
y breaking does not occur\, by varying the values of the magnetic charges
of the additional monopole and anti-monopole. In this talk\, we would like
to present our preliminary results about the catalytic effects of QCD mon
opoles in the finite temperature.\n\nhttps://conference-indico.kek.jp:443/
indico/event/76/session/7/contribution/39
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/39
END:VEVENT
BEGIN:VEVENT
SUMMARY:Order of the color superconducting phase transition
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-12@cern.ch
DESCRIPTION:Speakers: Dr. FEJOS\, Gergely (Keio University)\nWe investigat
e via the functional renormalization group the order of the color supercon
ducting phase transition. We calculate the flow of the gauge coupling in a
3d Ginzburg-Landau theory and investigate whether it supports the existen
ce of infrared stable fixed points.\n\nhttps://conference-indico.kek.jp:44
3/indico/event/76/session/7/contribution/12
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/12
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anomalous Casimir effect in axion electrodynamics
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-59@cern.ch
DESCRIPTION:Speakers: Mr. QIU\, Zebin (University of Tokyo)\nThe Casimir e
ffect is relevant for QCD physics in many contexts such as a possible orig
in of the dark energy\, an extra pressure in the hadron bag model etc. In
this talk we delve into the Casimir effect in (3+1)-dimensional Maxwell-Ch
ern-Simons (MCS) theory aka axion electrodynamics. It is known that two bo
dies with reflection symmetry always have an attractive Casimir force\, bu
t this ``no-go theorem'' has been challenged recently. We demonstrate that
a spatially inhomogeneous topological $\\theta$ angle induces a repulsive
Casimir force. This is a detectable effect in the topological insulator f
or which axion electrodynamics is the effective theory.\n\nhttps://confere
nce-indico.kek.jp:443/indico/event/76/session/7/contribution/59
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/59
END:VEVENT
BEGIN:VEVENT
SUMMARY:Relativistic quantum molecular dynamics approach for heavy-ion col
lisions at high baryon density region
DTSTART;VALUE=DATE-TIME:20190625T064500Z
DTEND;VALUE=DATE-TIME:20190625T071000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-22@cern.ch
DESCRIPTION:Speakers: Prof. NARA\, Yasushi (Akita International University
)\nA new N-body non-equilibrium transport model based on the relativistic
quantum molecular dynamics (RQMD) is developed for the simulations of high
energy heavy ion collisions at high baryon density regions. In this appro
ach\, hadrons interact via the sigma-omega fields in the mean-field approx
imation as well as the hard two-body scatterings which produce the strings
and hadronic resonances in JAM transport code. We compare results on the
beam energy dependence of the directed and elliptic flows with the E895\,N
A49 and STAR data. The relativistic mean-field theory predicts the density
isomer state which is a strong first-order phase transition to the nucleo
n matter to the resonance matter. We investigate the effects of such stron
g first-order phase transition to the delta-matter on the directed flow. O
ur dynamical approach can be also applied to the event-by-event fluctuatio
ns. We also discuss the effects of delta-matter transition on the net-prot
on cumulant ratios.\n\nhttps://conference-indico.kek.jp:443/indico/event/7
6/session/10/contribution/22
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/10/contri
bution/22
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quarkonium suppression in streaming quark-gluon plasma
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-14@cern.ch
DESCRIPTION:Speakers: Dr. MOLDABEKOV\, Zhandos (Al Farabi Kazakh National
University)\nQuarkonium suppression in quark-gluon plasma has been investi
gated since original work by Matsui and Satz [1]. This topic remains actua
l due to the need of quark-gluon plasma diagnostics. In fact\, both quarko
nium suppression in quark-gluon plasma and recombination during hadronisat
ion remain to be key open questions [2]. The bound state of quarkonium is
theoretically well investigated in the case of equilibrium quark-gluon pla
sma [3]. However\, the experimentally produced quark-gluon plasmas is stro
ngly non-equilibrium. Therefore\, in this work we present results for the
quarkonium suppression in streaming quark-gluon plasmas. For this propose
we use the concept of dynamical screening using the dielectric function of
collisional quark-gluon plasma.\n\n[1] T. Matsui and H. Satz\, Physics Le
tters 178\, 416 (1986)\n\n[2] Jurgen Schukraft\, Nuclear Physics A 967\, 1
(2017)\n\n[3] R. Rapp and X. Du\, Nuclear Physics A 967\, 216 (2017)\n\nh
ttps://conference-indico.kek.jp:443/indico/event/76/session/7/contribution
/14
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/14
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lattice with external fields and rotation
DTSTART;VALUE=DATE-TIME:20190626T000000Z
DTEND;VALUE=DATE-TIME:20190626T004500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-16@cern.ch
DESCRIPTION:Speakers: Dr. YAMAMOTO\, Arata (University of Tokyo)\nExtreme
environments\, such as strong electromagnetic force and fast rotation\, in
duce interesting quantum phenomena. They are relevant both for high energy
experiments and for condensed matter experiments. From a theoretical poin
t of view\, we need reliable computational frameworks to investigate them.
I would like to review such endeavors in lattice gauge theory.\n\nhttps:/
/conference-indico.kek.jp:443/indico/event/76/session/12/contribution/16
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/12/contri
bution/16
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tensor network study of two dimensional complex $\\phi^{4}$ theory
at finite density
DTSTART;VALUE=DATE-TIME:20190626T074500Z
DTEND;VALUE=DATE-TIME:20190626T081000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-33@cern.ch
DESCRIPTION:Speakers: Dr. SAKAI\, Ryo (Kanazawa University)\nWe study the
complex $\\phi^{4}$ theory with finite chemical potential. To closely unde
rstand nontrivial effects such as the Silver Blaze phenomenon\, experiment
al studies on the lattice will give some knowledge\; however\, on account
of the finite chemical potential\, there is a sign problem in Monte Carlo
simulations. In this study\, to overcome the problem\, the tensor renormal
ization group approach is employed\, and we give some numerical results su
rrounding the phenomena in the finite density system.\n\nhttps://conferenc
e-indico.kek.jp:443/indico/event/76/session/15/contribution/33
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/15/contri
bution/33
END:VEVENT
BEGIN:VEVENT
SUMMARY:Schwinger-Keldysh formalism for Lattice Gauge Theories
DTSTART;VALUE=DATE-TIME:20190626T081000Z
DTEND;VALUE=DATE-TIME:20190626T083500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-54@cern.ch
DESCRIPTION:Speakers: Mr. HOSHINA\, Hiroki (The Univ. of Tokyo\, Komaba)\n
It is important to compute transport coefficients in QCD at finite tempera
ture and density. When the imaginary-time formalism of Lattice QCD is used
\, the spectral functions have to be reconstructed by supplementing certai
n Ansatze for correlation functions on the lattice. On the other hand\, re
al-time Green's functions can be obtained directly in the Schwinger-Keldys
h (SK) formalism. But the SK formalism has not been constructed so far for
QCD non-perturbatively. In this work we formulate the SK formalism for La
ttice QCD by constructing the transfer matrix in the direction of real tim
e for gauge link field and Wilson fermion. We examine the spectral functio
ns and other real-time Green's functions in weak gauge-coupling limit. We
also obtain the Kubo formulae in this framework as a summation of the real
-time Green's functions on the closed time path.\n\nhttps://conference-ind
ico.kek.jp:443/indico/event/76/session/15/contribution/54
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/15/contri
bution/54
END:VEVENT
BEGIN:VEVENT
SUMMARY:The sign problem in low dimensional QCD studied by using the path
optimization
DTSTART;VALUE=DATE-TIME:20190626T063500Z
DTEND;VALUE=DATE-TIME:20190626T070000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-57@cern.ch
DESCRIPTION:Speakers: Mr. MORI\, Yuto (Kyoto University)\nThe sign problem
\, is a serious obstacle to perform the Monte Carlo simulations of QCD wit
h finite chemical potential\, is caused by the oscillation of the Boltzman
n factor. To avoid this problem\, we have proposed the path optimization m
ethod. In this method\, we optimize the integral path in complex plain to
decrease the cancellation in integral. In this talk\, we explain the appli
cation of this method to gauge theory\, and discuss the sign problem of lo
w dimensional QCD.\n\nhttps://conference-indico.kek.jp:443/indico/event/76
/session/14/contribution/57
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/14/contri
bution/57
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nonrelativistic Nambu-Goldstone modes of generalized global symmet
ries and new dynamic critical phenomena in QCD
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-30@cern.ch
DESCRIPTION:Speakers: Mr. SOGABE\, Noriyuki (Keio University)\nWe study th
e effects of dynamical electromagnetic fields on the second-order chiral p
hase transition of QCD under a background magnetic field. We show that the
interaction between the photon and the neutral pion through the quantum a
nomaly causes the type-B Nambu Goldstone (NG) mode associated with the spo
ntaneous breaking of the generalized global symmetries. Furthermore\, we f
ind that such a novel NG mode leads to the new dynamic universality class
beyond the conventional Hohenberg and Halperin's classification. We also a
rgue a possible realization of this new dynamic universality class in 3-di
mensional Dirac semimetals.\n\nhttps://conference-indico.kek.jp:443/indico
/event/76/session/7/contribution/30
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/30
END:VEVENT
BEGIN:VEVENT
SUMMARY:The interpolation approach to dense QCD and neutron-star phenomeno
logy
DTSTART;VALUE=DATE-TIME:20190624T020500Z
DTEND;VALUE=DATE-TIME:20190624T025000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-51@cern.ch
DESCRIPTION:Speakers: Dr. GORDA\, Tyler (University of Virginia)\nNeutron
stars (NSs) contain the densest observable matter in the universe. Within
their cores lies QCD matter compressed to multiple times the density of co
mmon nuclei. Unfortunately\, this matter is too dense to be studied from f
irst-principles nuclear-physics calculations\, and not dense enough to be
studied using first-principles perturbative-QCD calculations. In this talk
\, I will detail a model-independent approach to bridge this unknown regio
n of the equation of state (EOS) of NS matter. By using interpolating func
tions to parametrize our ignorance of the EOS between the extremes of nucl
ear and quark matter\, and by demanding that a few robust astrophysical co
nstraints hold for each interpolated EOS\, we are able place bounds on the
allowed region in pressure and energy density where the EOS of NS matter
must lie. Furthermore\, we are also beginning to be able to draw conclusio
ns about the physical properties of this matter\, and to address such ques
tions as whether NSs are dense enough to contain quark matter in their cor
es.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/4/cont
ribution/51
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/4/contrib
ution/51
END:VEVENT
BEGIN:VEVENT
SUMMARY:Current status and perspectives of complex Langevin calculations i
n finite density QCD
DTSTART;VALUE=DATE-TIME:20190624T000000Z
DTEND;VALUE=DATE-TIME:20190624T004500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-36@cern.ch
DESCRIPTION:Speakers: Prof. NISHIMURA\, Jun (KEK)\nMonte Carlo studies of
finite density QCD is difficult due to the notorious sign problem. As a pr
omising approach that can avoid this problem\, the complex Langevin method
has been attracting attention. In particular\, a practical criterion for
correct convergence has been proposed\, and it is found to be satisfied in
certain parameter regions of finite density QCD. In this talk I will summ
arize our results obtained so far and discuss what one can do using this m
ethod.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/3/c
ontribution/36
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/3/contrib
ution/36
END:VEVENT
BEGIN:VEVENT
SUMMARY:Formulating relativistic hydrodynamics with spin polarization
DTSTART;VALUE=DATE-TIME:20190625T031000Z
DTEND;VALUE=DATE-TIME:20190625T033500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-53@cern.ch
DESCRIPTION:Speakers: Dr. HONGO\, Masaru (Keio University)\nRecently\, the
re have been significant experimental progresses in observing and controll
ing spin-dependent bulk quantities in broad areas in physics such as relat
ivistic heavy-ion collisions and spintronics. Although hydrodynamics is on
e of the most powerful theoretical frameworks to describe such macroscopic
bulk quantities\, its extension to a spinful fluid has not been fully dev
eloped\, especially for relativistic systems. In this study\, we formulate
dissipative relativistic hydrodynamics with a dynamical spin degree of fr
eedom based on the phenomenological entropy-current analysis [1]. With the
help of the first and second laws of local thermodynamics\, we constrain
the possible constitutive relations for a relativistic spinful fluid. In a
ddition\, we perform the linear-mode analysis on the top of global thermal
equilibrium\, and clarify that spin density gives a non-hydrodynamic diff
usive mode with a finite lifetime. This diffusive behavior is a consequenc
e of the mutual convertibility between spin and orbital angular momentum.
\n\n[1] K. Hattori\, M. Hongo\, X.-G. Huang\, M. Matsuo\, H. Taya\, "Fate
of spin polarization in a relativistic fluid: An entropy-current analysis\
," arXiv:1901.06615\n\nhttps://conference-indico.kek.jp:443/indico/event/7
6/session/9/contribution/53
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/9/contrib
ution/53
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex poles and spectral function of the Landau gauge gluon prop
agator: effects of quark flavors
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-52@cern.ch
DESCRIPTION:Speakers: Ms. HAYASHI\, Yui (Chiba University)\nThe analytic s
tructures of propagators have kinematic information and are important to u
nderstand the color confinement\; in particular\, the existence of complex
poles is a signal of confinement for the corresponding particle. We deriv
e general relationships between the number of complex poles of a propagato
r and the spectral function under some assumptions on the asymptotic behav
iors of the propagator. We apply this relation to the massive Yang-Mills m
odel\, which is an effective model of the Landau gauge Yang-Mills theory\,
to show that the gluon propagator in this model has two complex poles. We
consider the flavor effects on the analytic structure of the gluon propag
ator in the massive Yang-Mills model with quarks and also discuss effects
of finite temperature and chemical potential towards understanding the QCD
phases in relation with the analytic structures of the propagators in the
Landau gauge QCD.\n\nhttps://conference-indico.kek.jp:443/indico/event/76
/session/7/contribution/52
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/52
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological susceptibility of two-color QCD at low temperature and
high density
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-19@cern.ch
DESCRIPTION:Speakers: Dr. ITOU\, Etsuko (Keio University)\nWe study the ch
emical potential $(\\mu)$ dependence of the topological susceptibility wit
h two-color two-flavor QCD. We find that at temperature $T \\sim T_c/2$\,
where Tc denotes the critical temperature at zero chemical potential\, the
topological susceptibility is almost constant until $\\mu/m_{PS}=1.6$\, w
hile at $T \\sim T_c$\, it decreases significantly from the $\\mu=0$ value
in a high $\\mu$ regime. In this work\, we perform the simulation for $\\
mu/T \\le 16$\, which covers even the low temperature and the high chemica
l potential regime. In this regime\, we introduce a diquark source term\,
which is characterized by $j$\, into the action. We also show our results
for the phase diagram in a low temperature regime $(T \\sim T_c/2)$\, whic
h is obtained after taking the $j \\to 0$ limit of physical observable.\n\
nhttps://conference-indico.kek.jp:443/indico/event/76/session/7/contributi
on/19
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/19
END:VEVENT
BEGIN:VEVENT
SUMMARY:Partial deconfinement
DTSTART;VALUE=DATE-TIME:20190624T071500Z
DTEND;VALUE=DATE-TIME:20190624T080000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-55@cern.ch
DESCRIPTION:Speakers: Prof. ISHIKI\, Goro (University of Tsukuba)\nWe disc
uss a "partially deconfined phase" in SU(N) gauge theories. This phase is
in between the confined and deconfined phases and is defined such that SU(
M) in SU(N) (M \n\nhttps://conference-indico.kek.jp:443/indico/event/76/se
ssion/6/contribution/55
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/6/contrib
ution/55
END:VEVENT
BEGIN:VEVENT
SUMMARY:Heavy quark spectral and transport properties from lattice QCD
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-74@cern.ch
DESCRIPTION:Speakers: Dr. KACZMAREK\, Olaf (University of Bielefeld)\nWe w
ill present recent results on thermal modifications of heavy quark spectra
l functions based on continuum extrapolated correlation functions in pure
SU(3) plasma and discuss constraints for the heavy quark diffusion coeffic
ients. Using the gradient flow technique for the color-electric field corr
elator in quenched as well as full QCD we will discuss the effects of dyna
mical fermions on the heavy quark momentum diffusion coefficient and provi
de first estimates on the thermal quarkonium mass shift of heavy quarks in
the thermal medium.\n\nhttps://conference-indico.kek.jp:443/indico/event/
76/session/7/contribution/74
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/74
END:VEVENT
BEGIN:VEVENT
SUMMARY:Partial deconfinement
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-37@cern.ch
DESCRIPTION:Speakers: Mr. WATANABE\, Hiromasa (University of Tsukuba)\nWe
argue the existence of "partially deconfined phase" in some SU(N) gauge th
eories\, that is in between the confined and deconfined phases. We charact
erize this phase in terms of the Polyakov line phases and study examples o
f theories in which the partially deconfined phase exists. We find that th
is phase is closely related to the Gross-Witten-Wadia phase transition. Th
e partially deconfined phase is conjectured to be the counterpart of the s
mall black hole phase in the context of the gauge/string duality. We also
discuss possible applications in this context.\n\nhttps://conference-indic
o.kek.jp:443/indico/event/76/session/7/contribution/37
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/37
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Kondo effect in dense QCD
DTSTART;VALUE=DATE-TIME:20190624T054000Z
DTEND;VALUE=DATE-TIME:20190624T060500Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-18@cern.ch
DESCRIPTION:Speakers: Dr. HATTORI\, Koichi (Yukawa Institute\, Kyoto Unive
rsity)\nWe discuss Kondo effect occurring in dense QCD [1\,2]. Based on th
e renormalization-group analysis\, we show that effective coupling strengt
hs between ungapped and gapped quarks in the two-flavor color superconduct
ing (2SC) phase are renormalized by logarithmic quantum corrections\, whic
h drives the system into a strongly coupled regime [2]. This is a characte
ristic behavior observed in the Kondo effect\, which has been known to occ
ur in the presence of impurity catterings via non-Abelian interactions. We
propose a novel Kondo effect emerging without doped impurities\, but with
the gapped quasiexcitations and the residual SU(2) color subgroup intrins
ic in the 2SC phase\, which we call the 2SC Kondo effect [2]. The Kondo ef
fect is a consequence of the dimensional reduction near the Fermi surface\
, and an analogous dimensional reduction in a strong magnetic field is als
o known to induce similar phenomena [3\, 4].\n\n[1] Hattori\, Itakura\, Oz
aki\, Yasui\, "QCD Kondo effect: quark matter with heavy-flavor impurities
\," Phys.Rev. D92 (2015) 065003.\n\n[2] Hattori\, Huang\, Pisarski\, "Emer
gent QCD Kondo effect in two-flavor color superconducting phase\," [arXiv:
1903.10953 [hep-ph]].\n\n[3] Gusynin\, Miransky\, Shovkovy\, "Dimensional
reduction and dynamical chiral symmetry breaking by a magnetic field in (3
+1)-dimensions\," Phys.Lett. B349 (1995) 477-483.\n\n[4] Ozaki\, Itakura\,
Kuramoto\, "Magnetically induced QCD Kondo effect\," Phys.Rev. D94 (2016)
074013.\n\nhttps://conference-indico.kek.jp:443/indico/event/76/session/5
/contribution/18
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/5/contrib
ution/18
END:VEVENT
BEGIN:VEVENT
SUMMARY:First study of $N_f=2+1+1$ lattice QCD with physical domain-wall q
uarks at finite temperatures (Cancelled)
DTSTART;VALUE=DATE-TIME:20190626T020500Z
DTEND;VALUE=DATE-TIME:20190626T023000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-17@cern.ch
DESCRIPTION:Speakers: Prof. CHIU\, Ting-Wai (National Taiwan University)\n
Using a GPU cluster consisting of 25 units of Nvidia DGX-1 (each unit havi
ng 8*V100 interconnected by the NVLink)\, TWQCD collaboration has generate
d the first gauge ensembles of $N_f=2+1+1$ lattice QCD with physical domai
n-wall quarks on the $ L_x^3 \\times L_t = 64^3 \\times (6\,8\,10\,12\,16)
$ lattices\, in the temperature range $ T \\simeq 200 - 550 $ MeV. The la
ttice spacing $a \\sim 0.064 $~fm ($ La > 4 $ fm\, and $ M_\\pi La > 3 $)
and the physical bare quark masses ($m_{u/d} a = 0.00125$\, $m_s a = 0.04$
\, $m_c a = 0.55$) are determined with the zero temperature gauge ensemble
resulting from the simulation of $N_f=2+1+1$ QCD on the $ 64^4 $ lattice.
In this talk\, I will outline the HMC simulation and the generation of th
e gauge ensembles. Moreover\, I will present the first physical results (e
.g.\, topological susceptibility) extracting from these $N_f = 2+1+1$ gaug
e ensembles with physical domain-wall quarks at finite temperatures.\n\nht
tps://conference-indico.kek.jp:443/indico/event/76/session/13/contribution
/17
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/13/contri
bution/17
END:VEVENT
BEGIN:VEVENT
SUMMARY:Correlations and probability distributions in high-energy nuclear
collisions
DTSTART;VALUE=DATE-TIME:20190625T004500Z
DTEND;VALUE=DATE-TIME:20190625T013000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-31@cern.ch
DESCRIPTION:Speakers: Dr. BZDAK\, Adam (AGH University of Science and Tech
nology)\nI will discuss the present efforts to probe the QCD phase diagram
with fluctuations and multi-particle correlations.\n\nhttps://conference-
indico.kek.jp:443/indico/event/76/session/8/contribution/31
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 134
URL:https://conference-indico.kek.jp:443/indico/event/76/session/8/contrib
ution/31
END:VEVENT
BEGIN:VEVENT
SUMMARY:Extracting equation of state from neutron star observation using m
achine learning
DTSTART;VALUE=DATE-TIME:20190624T080000Z
DTEND;VALUE=DATE-TIME:20190624T082000Z
DTSTAMP;VALUE=DATE-TIME:20191016T105341Z
UID:indico-contribution-76-50@cern.ch
DESCRIPTION:Speakers: Mr. FUJIMOTO\, Yuki (The University of Tokyo)\nFirst
-principles evaluation of the dense matter equation of state is one of the
longstanding problems in QCD. Owing to the advances in neutron star obser
vations in last decade\, it is now possible to evaluate the equation of st
ate from the observational data. As it circumvent the problems that are in
herent in the theory\, it may put significant constraint on the theory. He
re we discuss a novel method of machine learning to deduce the equation of
state from a set of mass-radius observational data\, which is alternative
to the Bayesian analysis based on different principle. Using test data (m
ock observational data) we confirm that the equation of state is correctly
reconstructed and this method works well. We use state of the art observa
tional data of mass-radius measured from neutron star X-ray radiations as
an input\, and estimate the equation of state. We confirm that the speed o
f sound calculated from the equation of state is surpassing the conformal
limit (1/3 of speed of light) as expected earlier. Our results are consist
ent with extrapolation from the conventional nuclear models and the experi
mental bound on the tidal deformability inferred from gravitational wave o
bservation. \n\n[1] Y. Fujimoto\, K. Fukushima\, K. Murase\, Phys. Rev. D
98\, 023019 (2018).\n\n[2] Y. Fujimoto\, K. Fukushima\, K. Murase\, arXiv:
1903.03400 [nucl-th].\n\nhttps://conference-indico.kek.jp:443/indico/event
/76/session/7/contribution/50
LOCATION:Bunkyo School Building\, Tokyo Campus\, University of Tsukuba 122
URL:https://conference-indico.kek.jp:443/indico/event/76/session/7/contrib
ution/50
END:VEVENT
END:VCALENDAR