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VERSION:2.0
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BEGIN:VEVENT
SUMMARY:Decoding the Path Integral: Resurgence and Non-Perturbative Physic
s
DTSTART;VALUE=DATE-TIME:20191203T073000Z
DTEND;VALUE=DATE-TIME:20191203T083000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-58@cern.ch
DESCRIPTION:Speakers: Prof. DUNNE\, Gerald ()\nThere are several important
conceptual and computational questions concerning the Minkowski space pat
h integral\, which have recently been approached from a new perspective mo
tivated by "resurgent asymptotics"\, which is a novel mathematical formali
sm that seeks to unify perturbative and non-perturbative physics. In this
general talk\, I will introduce the \nbasic ideas\, report on some example
s in quantum mechanics and quantum field theory\, and discuss future prosp
ects.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/8/co
ntribution/58
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/8/contrib
ution/58
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hyperbolic Field Space and Swampland Conjecture for DBI Scalar
DTSTART;VALUE=DATE-TIME:20191205T043000Z
DTEND;VALUE=DATE-TIME:20191205T044500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-30@cern.ch
DESCRIPTION:Speakers: Dr. ZHANG\, Yun-Long ()\nWe study a model of two sca
lar fields with a hyperbolic field space and show that it reduces to a sin
gle-field Dirac-Born-Infeld (DBI) model in the limit where the field space
becomes infinitely curved. We apply the de Sitter swampland conjecture to
the two-field model and take the same limit. It is shown that in the limi
t\, all quantities appearing in the swampland conjecture remain well-defin
ed within the single-field DBI model. Based on a consistency argument\, we
then speculate that the condition derived in this way can be considered a
s the de Sitter swampland conjecture for a DBI scalar field by its own. We
also propose an extension of the de Sitter swampland conjecture to the P(
X) theories with more general scalar field. [arXiv: 1905.10950]\n\nhttps:/
/conference-indico.kek.jp:443/indico/event/80/session/6/contribution/30
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/30
END:VEVENT
BEGIN:VEVENT
SUMMARY:From 3d dualities to hadron physics
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-54@cern.ch
DESCRIPTION:Speakers: Mr. KAN\, Naoto ()\nWhen one of the space-time dimen
sion is compactified on the circle\, the QCD exhibits the chiral phase tra
nsition at some critical radius. When we further turn on a background thet
a term which depends on the compactified coordinate\, a topological ordere
d phase appears at low energy via the winding of the theta. We discuss wha
t kind of theories can describe the physics near the critical point by req
uiring the matching of topological field theories in the infrared. As one
of the possibilities\, we propose a scenario where the rho and omega meson
s form a U(Nf) gauge theory near the critical point. In the phase where th
e chiral symmetry is restored\, they become the dual gauge boson of the gl
uon related by the level-rank duality between the three dimensional gauge
theories.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/
5/contribution/54
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/54
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wavefunctions and Yukawa couplings on Resolutions of C^N/Z_N Orbif
olds
DTSTART;VALUE=DATE-TIME:20191204T082000Z
DTEND;VALUE=DATE-TIME:20191204T083500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-28@cern.ch
DESCRIPTION:Speakers: Dr. OTSUKA\, Hajime ()\nWe propose matter wavefuncti
ons on resolutions of C^N/Z_N singularities with magnetic fluxes. In this
talk\, we first discuss the resolution of magnetized T^2/Z_N orbifold mode
ls. In the blow-down limit of T^2/Z_N orbifolds\, the obtained wavefunctio
ns of chiral zero-modes result in those on the magnetized T^2/Z_N orbifold
models\, but only the wavefunctions of Z_N-invariant zero-modes receive t
he blow-up effects around fixed points of T^2/Z_N orbifolds. Such blowup e
ffects change the selection rules and Yukawa couplings among the chiral ze
ro-modes as well as the modular symmetry\, in contrast to those on the mag
netized T^2/Z_N orbifold models. We also discuss the matter wavefunctions
on resolutions of K3 orbifolds.\n\nhttps://conference-indico.kek.jp:443/in
dico/event/80/session/6/contribution/28
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/28
END:VEVENT
BEGIN:VEVENT
SUMMARY:String Geometry Phenomenology
DTSTART;VALUE=DATE-TIME:20191204T083500Z
DTEND;VALUE=DATE-TIME:20191204T085000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-29@cern.ch
DESCRIPTION:Speakers: Prof. SATO\, Matsuo ()\nString geometry theory is on
e of candidates of the non-perturbative formulation of string theory. In o
rder to derive low-energy phenomena\, we first need to clarify how supergr
avity background fields\, which represent the space-time and the internal
space\, are described in string geometry theory. In this presentation\, we
show that arbitrary configurations of the heterotic supergravity backgrou
nd fields are embedded in configurations of fields of string geometry theo
ry. Especially\, the configurations of string geometry satisfy equations o
f motions of string geometry theory if the embedded supergravity backgroun
ds satisfy the equations of motions of the heterotic supergravity. We can
obtain the perturbative heterotic string theory on the flat space-time if
we take the Newtonian limit around the configuration of string geometry co
rresponding to the flat space-time. Thus\, we expect that we can also obta
in the perturbative heterotic string theory on the supergravity background
s if we take the Newtonian limit around the configurations of string geome
try corresponding to the supergravity backgrounds.\n\nhttps://conference-i
ndico.kek.jp:443/indico/event/80/session/6/contribution/29
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/29
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex Langevin simulation of the Lorentzian type IIB matrix mode
l
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-60@cern.ch
DESCRIPTION:Speakers: Mr. HIRASAWA\, Mitsuaki (SOKENDAI)\nThe type IIB mat
rix model has been studied as a candidate of non-perturbative formulation
of superstring theory. In particular\, by Monte Carlo simulation of the Lo
rentzian type IIB matrix model\, (3+1)-dimensional expanding space-time wa
s shown to emerge dynamically. With its detailed analysis\, we found that
the emergent 3-dimensional space is essentially described by the Pauli mat
rices\, we call this structure as the Pauli-matrix structure. In fact\, th
e Monte Carlo simulation of the Lorentzian type IIB matrix model has the s
ign problem. Therefore\, we had used an approximation to avoid the sign pr
oblem in the previous works. However\, there is a subtlety in the approxim
ation\, and it might cause the Pauli-matrix structure. In this work\, we g
eneralize the model by introducing two parameters which are related to the
Wick rotation on the world sheet and in the target space. We perform the
complex Langevin simulation of the generalized model to overcome the sign
problem. As a result\, we can see a deviation from the Pauli-matrix struct
ure as we approach to the original model without losing the expanding beha
vior.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/5/co
ntribution/60
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/60
END:VEVENT
BEGIN:VEVENT
SUMMARY:Unitary matrix model with the logarithmic potential
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-61@cern.ch
DESCRIPTION:Speakers: Mr. TASHIRO\, Hitomi (SOKENDAI)\nWe study the unitar
y one-matrix model with the logarithmic potential. It has been known that
a hermitian one-matrix model with a logarithmic potential yields the prepo
tential of 4d N=2 SU(2) SUSY gauge theory as its large-N free energy. We g
ive a rigorous proof that the unitary matrix model with the potential of t
he same form as the hermitian matrix model for 4d N=2 Nf=2 SU(2) SUSY gaug
e theory yields the identical prepotential of it\, although the parameter
identifications of each model are slightly different. This result has been
anticipated by Itoyama\, Oota\, and Yano.\n\nhttps://conference-indico.ke
k.jp:443/indico/event/80/session/5/contribution/61
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/61
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tricritical point and non-equilibrium phase transition in gauge gr
avity duality
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-53@cern.ch
DESCRIPTION:Speakers: Mr. MATSUMOTO\, Masataka ()\nWe study the phase stru
cture associated with the chiral symmetry in the D3-D7 model. We find the
non-equilibrium phase transition for massless quarks in the presence of a
constant current and a magnetic field. This non-equilibrium phase transiti
on is related to the chiral symmetry breaking. We also discover the tricri
tical point in the phase diagram.\n\nhttps://conference-indico.kek.jp:443/
indico/event/80/session/5/contribution/53
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/53
END:VEVENT
BEGIN:VEVENT
SUMMARY:S-duality for gauged Argyres-Douglas theories
DTSTART;VALUE=DATE-TIME:20191205T023000Z
DTEND;VALUE=DATE-TIME:20191205T031000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-34@cern.ch
DESCRIPTION:Speakers: Prof. NISHINAKA\, Takahiro ()\nhttps://conference-in
dico.kek.jp:443/indico/event/80/session/10/contribution/34
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/34
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chiral vortical conductivity across a topological phase transition
from holography
DTSTART;VALUE=DATE-TIME:20191204T070000Z
DTEND;VALUE=DATE-TIME:20191204T071500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-24@cern.ch
DESCRIPTION:Speakers: Dr. JI\, Xuanting ()\nWe study the chiral vortical c
onductivity in a holographic Weyl semimetal model\, which describes a topo
logical phase transition from the strongly coupled topologically nontrivia
l phase to a trivial phase. We focus on the temperature dependence of the
chiral vortical conductivity where the mixed gauge-gravitational anomaly p
lays a crucial role. After a proper renormalization of the chiral vortical
conductivity by the anomalous Hall conductivity and temperature squared\,
we find that at low temperature in both the Weyl semimetal phase and the
quantum critical region this renormalized ratio stays as universal constan
ts. More intriguingly\, this ratio in the quantum critical region depends
only on the emergent Lifshitz scaling exponent at the quantum critical poi
nt.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/6/cont
ribution/24
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/24
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nuclear states and spectra in holographic QCD
DTSTART;VALUE=DATE-TIME:20191204T071500Z
DTEND;VALUE=DATE-TIME:20191204T073000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-25@cern.ch
DESCRIPTION:Speakers: Dr. MATSUO\, Yoshinori ()\nA new method to study nuc
lear physics via holographic QCD is proposed. Multiple baryons in the Saka
i-Sugimoto background are described by a matrix model which is a low energ
y effective theory of D-branes of the baryon vertices. We study the quantu
m mechanics of the matrix model and calculate the eigenstates of the Hamil
tonian. The obtained states are found to coincide with known nuclear and b
aryonic states\, and have appropriate statistics and charges. Calculated s
pectra of the baryon/nucleus for small baryon numbers show good agreement
with experimental data. The model partially explains even the magic number
s of light nuclei\, N=2\, 8 and 20.\n\nhttps://conference-indico.kek.jp:44
3/indico/event/80/session/6/contribution/25
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/25
END:VEVENT
BEGIN:VEVENT
SUMMARY:2d 't Hooft anomaly\, orbifolding\, and boundary states
DTSTART;VALUE=DATE-TIME:20191204T075000Z
DTEND;VALUE=DATE-TIME:20191204T080500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-26@cern.ch
DESCRIPTION:Speakers: Dr. KIKUCHI\, Ken ()\nWe study anomalies for a discr
ete internal global symmetry $G$ in two-dimensional conformal field theori
es based on twisted torus partition functions. The 't Hooft anomaly of $G$
can be seen from the noncommutativity of two symmetry lines inserted alon
g the nontrivial circles of two-torus and we propose a criterion to detect
the 't Hooft anomaly\, which agrees with the truncated modular $S$-matrix
approach as well as the cohomology classification. The obstruction for or
bifolding has been recently interpreted as a mixed anomaly between $G$ and
large diffeomorphisms. We clarify the relations among 't Hooft anomaly-fr
ee\, orbifolding condition and invariant boundary state condition\, focusi
ng on Wess-Zumino-Witten models.\n\nhttps://conference-indico.kek.jp:443/i
ndico/event/80/session/6/contribution/26
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/26
END:VEVENT
BEGIN:VEVENT
SUMMARY:Does Boundary Distinguish Complexities?
DTSTART;VALUE=DATE-TIME:20191204T080500Z
DTEND;VALUE=DATE-TIME:20191204T082000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-27@cern.ch
DESCRIPTION:Speakers: Dr. SATO\, Yoshiki ()\nRecently\, Chapman et al. arg
ued that holographic complexities for defects distinguish action from volu
me. Motivated by their work\, we study complexity of quantum states in con
formal field theory with boundary. In generic two-dimensional BCFT\, we wo
rk on the path-integral optimization which gives one of field-theoretic de
finitions for the complexity. We also perform holographic computations of
the complexity in Takayanagi's AdS/BCFT model following by the "complexity
= volume" conjecture and "complexity = action" conjecture. We find that i
ncrements of the complexity due to the boundary show the same divergent st
ructures in these models except for the CA complexity in the AdS3/BCFT2 mo
del as the argument by Chapman et al. Thus\, we conclude that boundary doe
s not distinguish the complexities in general.\n\nhttps://conference-indic
o.kek.jp:443/indico/event/80/session/6/contribution/27
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/27
END:VEVENT
BEGIN:VEVENT
SUMMARY:Evidence for Weak-Coupling Holography from the Gauge/Gravity Corre
spondence for Dp-branes
DTSTART;VALUE=DATE-TIME:20191203T060000Z
DTEND;VALUE=DATE-TIME:20191203T061500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-20@cern.ch
DESCRIPTION:Speakers: Prof. SEKINO\, Yasuhiro ()\nGauge/gravity correspond
ence is regarded as a powerful tool for the study strongly-coupled quantum
systems\, but its proof is not available. An unresolved issue that should
be closely related to the proof is what kind of correspondence exists\, i
f any\, when gauge theory is weakly coupled. We report progress about this
limit for the case associated with D$p$-branes ($0\\le p\\le 4$)\, namely
\, the duality between the $(p+1)$-dimensional maximally supersymmetric Ya
ng-Mills theory and superstring theory on the near-horizon limit of the D$
p$-brane solution. It has been suggested by supergravity analysis that the
two-point functions of certain operators in gauge theory obey power law w
ith the power different from the free-field value for $p\\neq 3$. We show
for the first time that the free-field result can be reproduced by superst
ring theory on the strongly curved background. The operator that we consid
er is of the form ${\\rm Tr}(Z^J)$\, where $Z$ is a complex combination of
two scalar fields. We assume that the corresponding string has the worlds
heet spatial direction discretized into $J$ bits\, and use the fact that t
hese bits become independent particles when string tension is zero.\n\nhtt
ps://conference-indico.kek.jp:443/indico/event/80/session/6/contribution/2
0
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/20
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetric non-abelian D-brane equations from open pure spinor
superstring
DTSTART;VALUE=DATE-TIME:20191203T061500Z
DTEND;VALUE=DATE-TIME:20191203T063000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-21@cern.ch
DESCRIPTION:Speakers: Dr. HANAZAWA\, Sota ()\nWe have examined the BRS inv
ariance of the open pure spinor superstring to derive equations of motion
for a supersymmetric D$p$-brane\, which should be induced from the DBI act
ion and the Wess-Zumino action. These equations are consistent with the di
mensional reduction of equations for a supersymmetric D9-brane obtained by
Berkovits and Pershin. They also analyzed non-abelian backgrounds up to q
uadratic order in ``boundary fermions''\, which are world-volume fermions
on D-branes and represent the Chan-Paton factors for open strings. In this
talk\, we will extend previous results to supersymmetric non-abelian D-br
ane equations including all boundary fermions.\n\nhttps://conference-indic
o.kek.jp:443/indico/event/80/session/6/contribution/21
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/21
END:VEVENT
BEGIN:VEVENT
SUMMARY:Renormalon in compactified spacetime and relation with bion
DTSTART;VALUE=DATE-TIME:20191204T063000Z
DTEND;VALUE=DATE-TIME:20191204T064500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-22@cern.ch
DESCRIPTION:Speakers: Dr. TAKAURA\, Hiromasa ()\nRecently\, it was conject
ured that the perturbative ambiguity known as the renormalon is canceled a
gainst the nonperturbative semiclassical object called bion. This conjectu
re expects this kind of cancellation in the circle compactified spacetime\
, in which the bion solution is found\, as a premise. To examine this conj
ecture\, we study the renormalon structure in the compactified spacetime u
nder the assumption typically realized in large N theories\, and find that
renormalon is significantly affected by the compactification. This seems
to be against naive expectation of recent bion scenario.\n\nhttps://confer
ence-indico.kek.jp:443/indico/event/80/session/6/contribution/22
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/22
END:VEVENT
BEGIN:VEVENT
SUMMARY:Double field inflation of generalized dilaton-axion models with a
new Fayet-Iliopoulos (FI) term
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-49@cern.ch
DESCRIPTION:Speakers: Mr. MAN\, Ping Kwan ()\nIn this talk\, we are going
to talk about inflation dynamics by KKLT-like model modified by a new Faye
t-iliopoulos (FI) term. KKLT model\, motivated by superstring theory\, giv
es the AdS vacuum\, which is phenomenologically forbidden. Although previo
us studies solved this problem by adding a D3 bar or D7 contribution to up
lift the vacuum to zero\, it is not flat enough to provide the initial slo
w-roll environment. In this talk\, we show that a new FI term without R ga
uged symmetry can provide this. We also show the parameters of dS vacuum a
nd inflation dynamics.\n\nhttps://conference-indico.kek.jp:443/indico/even
t/80/session/5/contribution/49
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/49
END:VEVENT
BEGIN:VEVENT
SUMMARY:How information geometry is encoded in bulk geometry
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-46@cern.ch
DESCRIPTION:Speakers: Mr. YAMASHIRO\, Kazushi ()\nWe study how information
geometry is described by bulk geometry in the gauge/gravity correspondenc
e. We consider a quantum information metric that measures the distance bet
ween the ground states of a CFT and a theory obtained by perturbing the CF
T. Using the GKP-Witten relation\, we find a universal formula that expres
ses the quantum information metric by a geometrical quantity in a back-rea
cted bulk geometry.\n\nhttps://conference-indico.kek.jp:443/indico/event/8
0/session/5/contribution/46
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/46
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex Langevin Simulation of 2D U(1) gauge theory with a theta t
erm
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-47@cern.ch
DESCRIPTION:Speakers: Mr. MATSUMOTO\, Akira ()\nThe Monte Carlo simulation
of gauge theories with a theta term is quite difficult due to the sign pr
oblem. The complex Langevin method is a promising approach to solve this p
roblem. We applied this method to the 2D U(1) gauge theory\, which is anal
ytically solvable\, in order to check the validity of the method. We were
able to reproduce the exact results in the whole region of -pi \n\nhttps:/
/conference-indico.kek.jp:443/indico/event/80/session/5/contribution/47
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/47
END:VEVENT
BEGIN:VEVENT
SUMMARY:Superconformal index and supersymmetry enhancement of S-fold theor
ies
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-44@cern.ch
DESCRIPTION:Speakers: Mr. ARAI\, Reona ()\nRecently concrete models of 4d
N=3 superconformal field theories called S-fold theories are constructed b
y Garcia-Etxebarria and Regalado. Although it is difficult to study these
theories due to the lack of the Lagrangian description and the strong coup
ling\, it is expected that there is a non-trivial supersymmetry enhancemen
t for rank one and two theories by Aharony and Tachikawa. In this poster\,
we evaluate the first non-trivial finite rank corrections to the supercon
formal index of these theories by using AdS/CFT correspondence and check t
he supersymmetry enhancement. To evaluate the index in finite rank\, we ma
inly focus on the D3-branes wrapping a non-trivial three cycle on AdS side
interpreted as Pfaffian-like operators on CFT side. We see that our resul
ts agree with the results expected from the supersymmetry enhancement.\n\n
https://conference-indico.kek.jp:443/indico/event/80/session/5/contributio
n/44
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/44
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dynamics of Revolving D-Branes at Short Distances
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-45@cern.ch
DESCRIPTION:Speakers: Mr. OHTA\, Hikaru ()\nWe study the behavior of the e
ffective potential between revolving Dp-branes at all ranges of the distan
ce $r$\, interpolating regions on which r is larger and smaller than the s
tring length. Since the one-loop open string amplitude cannot be calculate
d exactly\, we instead employ an efficient method of partial modular trans
formation. The method is to perform the modular transformation partially i
n the moduli parameter and rewrite the amplitude into a sum of contributio
ns from both of the open and closed string massless modes. It is neverthel
ess free from the double counting and can approximate the open string ampl
itudes with less than 3% accuracy. From the D-brane effective field theory
point of view\, this amounts to calculating the one-loop threshold correc
tions of infinitely many open string massive modes. We show that threshold
corrections to the ω^2r^2 term of the moduli field r cancel among them\,
where ω is the angular frequency of the revolution and sets the scale of
supersymmetry breaking. This cancellation suggests a possibility to solve
the hierarchy problem of the Higgs mass in high scale supersymmetry break
ing models.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/sessio
n/5/contribution/45
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/45
END:VEVENT
BEGIN:VEVENT
SUMMARY:Finite N corrections to the superconformal index of toric quiver g
auge theories
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-42@cern.ch
DESCRIPTION:Speakers: Mr. MORI\, Tatsuya ()\nWe study the finite N AdS/CFT
correspondence between the Type IIB string theories on AdS5×SE5 and quiv
er gauge theories\, where SE5 is a five-dimensional Sasaki-Einstein manifo
ld. Our assumption is that D3-branes wrapping on the three-cycles in the i
nternal space give the finite N corrections to the index. We calculate the
index of wrapped D3-branes and get the non-trivial coincidence for leadin
g finite N corrections in comparison with the localization results from th
e gauge theory.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/se
ssion/5/contribution/42
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/42
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instability of Higgs Vacuum via String Cloud
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-43@cern.ch
DESCRIPTION:Speakers: Mr. KOGA\, Issei ()\nWe study the instability of the
Higgs vacuum caused by a cloud of strings. By the catalysis\, the decay r
ate of the vacuum is highly enhanced and when the energy density of the cl
oud is larger than the critical value\, the semi-classical vacuum decay oc
curs. We also discuss the relation between the cloud of strings and observ
ational constraints on cosmic strings in terms of the catalysis\, providin
g constraints on the parameters of the Higgs potential.\n\nhttps://confere
nce-indico.kek.jp:443/indico/event/80/session/5/contribution/43
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/43
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higher spin symmetry in the IIB matrix model with the operator int
erpretation
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-40@cern.ch
DESCRIPTION:Speakers: Mr. SAKAI\, Katsuta ()\nWe study the IIB matrix mode
l in an interpretation where the matrices are differential operators defin
ed on curved spacetimes. In this interpretation\, coefficients of higher d
erivative operators formally appear to be massless higher spin fields. Wit
h my poster\, we discuss whether the unitary symmetry of the matrices incl
udes appropriate higher spin gauge symmetries. We find that the additional
auxiliary fields need to be introduced in order to formulate the manifest
symmetries\, with which potentially unstable components are eliminated. A
s a result\, we observe that the independent physical DoF are the transver
se components of that symmetric field\, and that the theory describes the
corresponding higher spin field. We also find that the field is not the Fr
onsdal field\, rather the generalization of curvature.\n\nhttps://conferen
ce-indico.kek.jp:443/indico/event/80/session/5/contribution/40
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/40
END:VEVENT
BEGIN:VEVENT
SUMMARY:D3-brane analysis for the superconformal index in orbifold quiver
gauge theories
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-41@cern.ch
DESCRIPTION:Speakers: Mr. FUJIWARA\, Shota ()\nWe study the orbifold type
of AdS5/CFT4 correspondence for ﬁnite N by using the superconformal inde
x. Especially\, we calculate the ﬁnite N corrections to the superconform
al index from the dual gravity theory. Our method is based on the assumpti
on that D3-branes wrapped around three-cycles in the internal space reprod
uce the ﬁnite N corrections. As a result we find this approach actually
gives the known superconformal index (localization result) for leading cor
rections for orbifold quiver gauge theories.\n\nhttps://conference-indico.
kek.jp:443/indico/event/80/session/5/contribution/41
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/41
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Gravity and Naturalness
DTSTART;VALUE=DATE-TIME:20191203T013000Z
DTEND;VALUE=DATE-TIME:20191203T021000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-5@cern.ch
DESCRIPTION:Speakers: Prof. KAWAI\, Hikaru ()\nWe discuss the possibility
that naturalness can be understood as an effect of quantum gravity. In par
ticular\, we will consider a mechanism by which the electroweak scale is n
aturally obtained from the Planck scale.\n\nhttps://conference-indico.kek.
jp:443/indico/event/80/session/10/contribution/5
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/5
END:VEVENT
BEGIN:VEVENT
SUMMARY:An Approach to Quantum Gravity -- Asymptotic Safety --
DTSTART;VALUE=DATE-TIME:20191203T043000Z
DTEND;VALUE=DATE-TIME:20191203T051000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-7@cern.ch
DESCRIPTION:Speakers: Prof. OHTA\, Nobuyoshi ()\nWe explain an approach to
formulate quantum gravity within the framework of local quantum field the
ory using functional renormalization group. called asymptotic safety. Star
ting how the approach is formulated\, we intoduce the notion of critical s
urface and discuss its dimensionality. Several physical aspects of this ap
proach are also discussed including quantum effective action derived from
renormalization group equation.\n\nhttps://conference-indico.kek.jp:443/in
dico/event/80/session/10/contribution/7
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/7
END:VEVENT
BEGIN:VEVENT
SUMMARY:Status of asymptotic safety in gravity-matter systems
DTSTART;VALUE=DATE-TIME:20191203T023000Z
DTEND;VALUE=DATE-TIME:20191203T031000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-6@cern.ch
DESCRIPTION:Speakers: Dr. YAMADA\, Masatoshi ()\nAsymptotically safe quant
um gravity is one of candidates for quantum gravity. It is essential that
there exists a non-trivial fixed point for gravitational couplings. In thi
s talk we review the current status of the asymptotic safety scenario for
gravity-matter systems.\n\nhttps://conference-indico.kek.jp:443/indico/eve
nt/80/session/10/contribution/6
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/6
END:VEVENT
BEGIN:VEVENT
SUMMARY:Resurgence and Phase Transitions
DTSTART;VALUE=DATE-TIME:20191204T013000Z
DTEND;VALUE=DATE-TIME:20191204T021000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-9@cern.ch
DESCRIPTION:Speakers: Prof. DUNNE\, Gerald ()\nResurgent asymptotics unifi
es perturbative and non-perturbative methods in quantum mechanics and quan
tum field theory\, and gives a new perspective on phase transitions. I pre
sent an introduction to the basic ideas behind resurgence and several phys
ical examples of phase transitions that can be probed this way\, including
the finite N approach to large N phase transitions. I also discuss new re
surgent extrapolation methods that can extend asymptotic expansions throug
hout the complex plane.\n\nhttps://conference-indico.kek.jp:443/indico/eve
nt/80/session/10/contribution/9
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/9
END:VEVENT
BEGIN:VEVENT
SUMMARY:IR renormalon in a compactified spacetime: the case of the QCD(adj
.) on $R^3\\times S^1$
DTSTART;VALUE=DATE-TIME:20191204T003000Z
DTEND;VALUE=DATE-TIME:20191204T011000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-8@cern.ch
DESCRIPTION:Speakers: Prof. SUZUKI\, Hiroshi ()\nAn interesting possibilit
y that the ambiguity in perturbation theory caused by the IR renormalon is
cancelled by the instability associated with a semi-classical object call
ed bion has been suggested in the context of the resurgence program of asy
mptotically-free quantum field theories. To reinforce this picture on the
IR renormalon\, the understanding of the IR renormalon in a compactified s
pace such as $R^{D−1}\\times S^1$ seems to be a basic premise. In this t
alk\, I report our recent analysis on the IR renormalon in the gluon conde
nsate in the $SU(N)$ QCD(adj.) on $R^3\\times S^1$ with the $Z_N$ twisted
boundary conditions. In the large $N$ limit within the so-called large $\\
beta_0$ approximation\, we find that the vacuum polarization of the W-boso
n\, which acquires the twisted momentum from the boundary conditions\, giv
es rise to the renormalon ambiguity that is identical to that in the syste
m in the un-compactified space\, $R^4$. This situation is completely diffe
rent from that in the 2D $CP^{N-1}$ model on $R^1\\times S^1$ (the analyse
s on the latter will be presented by Dr. Takaura and Mr. Morikawa).\n\nhtt
ps://conference-indico.kek.jp:443/indico/event/80/session/10/contribution/
8
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/8
END:VEVENT
BEGIN:VEVENT
SUMMARY:Deep into the Amplituhedron
DTSTART;VALUE=DATE-TIME:20191204T053000Z
DTEND;VALUE=DATE-TIME:20191204T061000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-13@cern.ch
DESCRIPTION:Speakers: Prof. TRNKA\, Jaroslav ()\nhttps://conference-indico
.kek.jp:443/indico/event/80/session/10/contribution/13
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/13
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cubic vertices for massless higher spin gauge fields in AdS spaces
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-38@cern.ch
DESCRIPTION:Speakers: Mr. SUZUKI\, Haruya ()\nHigher spin (HS) gauge theor
y may be regarded as a generalization of the electromagnetic theory of a s
pin-1 photon and the linearized gravity of a spin-2 graviton. String theor
y which has infinitely many massive modes may be seen as a broken phase of
the HS gauge symmetry. The higher spin gauge theory is expected to gain a
deeper understanding of AdS/CFT duality. To gain more insight into the du
ality\, It is necessary to understand quantum spectrum of string in AdS. T
his is not achieved yet\, because the actin of higher spin theory is not c
ompletely known in AdS. In this presentation\, we consider cubic interacti
on vertices of bosonic HS fields with spin s1\, s2 and s3\, in flat and Ad
S spaces.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/
5/contribution/38
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/38
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swampland Phenomenology
DTSTART;VALUE=DATE-TIME:20191206T003000Z
DTEND;VALUE=DATE-TIME:20191206T011000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-15@cern.ch
DESCRIPTION:Speakers: Prof. YAMAZAKI\, Masahito ()\nhttps://conference-ind
ico.kek.jp:443/indico/event/80/session/10/contribution/15
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/15
END:VEVENT
BEGIN:VEVENT
SUMMARY:Scattering Amplitudes from Geometries at Infinity
DTSTART;VALUE=DATE-TIME:20191205T003000Z
DTEND;VALUE=DATE-TIME:20191205T011000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-14@cern.ch
DESCRIPTION:Speakers: Prof. HE\, Song ()\nhttps://conference-indico.kek.jp
:443/indico/event/80/session/10/contribution/14
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/14
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sign problem and the tempered Lefschetz thimble method
DTSTART;VALUE=DATE-TIME:20191204T043000Z
DTEND;VALUE=DATE-TIME:20191204T051000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-11@cern.ch
DESCRIPTION:Speakers: Prof. FUKUMA\, Masafumi ()\nThe tempered Lefschetz t
himble method (TLTM) [arXiv:1703.00861] is a parallel-tempering algorithm
towards solving the numerical sign problem. It uses the flow time of the a
ntiholomorphic gradient flow as a tempering parameter and is expected to t
ame both the sign and multimodal problems simultaneously. In this talk\, a
fter reviewing the TLTM\, we apply the method to various problems\, includ
ing the quantum Monte Carlo simulation of the Hubbard model away from half
-filling and the chiral random matrix models with finite temperature and f
inite chemical potential.\n\nhttps://conference-indico.kek.jp:443/indico/e
vent/80/session/10/contribution/11
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/11
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anomaly matching in QCD thermal phase transition
DTSTART;VALUE=DATE-TIME:20191206T013000Z
DTEND;VALUE=DATE-TIME:20191206T021000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-10@cern.ch
DESCRIPTION:Speakers: Prof. YONEKURA\, Kazuya ()\nI will talk about a nonp
erturbative constraint on QCD thermal phase transition. First\, I discuss
a rigorous constraint from 't Hooft anomaly matching when the quarks are m
assless and we introduce an imaginary baryon chemical potential at the Rob
erge-Weiss point. Then\, I discuss the reason why I think the constraint i
s also relevant for the QCD phase transition without any imaginary chemica
l potential and with realistic quark masses.\n\nhttps://conference-indico.
kek.jp:443/indico/event/80/session/10/contribution/10
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/10
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cancellation of one-loop corrections to scalar masses in Yang-Mill
s theory with flux compactification
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-39@cern.ch
DESCRIPTION:Speakers: Mr. HIROSE\, Takuya ()\nWe calculate one-loop correc
tions to the mass for the zero mode of scalar field in a six-dimensional Y
ang-Mills theory compactified on a torus with magnetic flux. It is shown t
hat these corrections are exactly cancelled thanks to a shift symmetry und
er the translation in extra spaces. This result is expected from the fact
that the zero mode of scalar field is a Nambu-Goldstone boson of the trans
lational invariance in extra spaces.\n\nhttps://conference-indico.kek.jp:4
43/indico/event/80/session/5/contribution/39
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/39
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD phase diagram and the possibility of topological phases
DTSTART;VALUE=DATE-TIME:20191205T013000Z
DTEND;VALUE=DATE-TIME:20191205T021000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-12@cern.ch
DESCRIPTION:Speakers: Prof. HIDAKA\, Yoshimasa ()\nI discuss possible phas
es of QCD at finite temperature\, density and/or strong fields. In particu
lar\, I discuss the possibility of topological phases in dense QCD matter.
\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/12
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/12
END:VEVENT
BEGIN:VEVENT
SUMMARY:Application of the tensor renormalization group method to non-Abel
ian lattice gauge theories
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-59@cern.ch
DESCRIPTION:Speakers: Mr. YOSPRAKOB\, Atis ()\nThe tensor renormalization
group method is a powerful tool to study \nlattice models\, which works ev
en with models that have sign problem. \nHowever\, so far\, its applicatio
n to gauge theory has been restricted the \nU(1) and SU(2) cases. In this
work\, we apply it to two-dimensional U(N) \ngauge theories which are exac
tly solvable. We are able to extract the \nlarge-N behaviors of the model
such as the Eguchi-Kawai reduction and \nthe Gross-Witten phase transition
. We also study the model with a theta-\nterm\, which has the sign problem
\, and reproduce exact results.\n\nhttps://conference-indico.kek.jp:443/in
dico/event/80/session/5/contribution/59
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/59
END:VEVENT
BEGIN:VEVENT
SUMMARY:On UV-finiteness of supersymmetric gradient flow in N=1 SQCD
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-48@cern.ch
DESCRIPTION:Speakers: Mr. SUZUKI\, Mitsuyo ()\nI will discuss perturbation
theory of supersymmetric gradient flow in 4D N = 1 SQCD. The perturbation
theory consists of a perturbative expansion of 4D SQCD and an iterative e
xpansion of the flow equation. In order to prove UV-finiteness of flow the
ory\, it is necessary to calculate its correlation functions and to constr
uct a d+1-dimensional theory which reproduces the same perturbation series
.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/5/contri
bution/48
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/48
END:VEVENT
BEGIN:VEVENT
SUMMARY:Asymptotic Freedom in de Sitter Space
DTSTART;VALUE=DATE-TIME:20191206T023000Z
DTEND;VALUE=DATE-TIME:20191206T031000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-17@cern.ch
DESCRIPTION:Speakers: Prof. KITAZAWA\, Yoshihisa ()\nWe investigate infrar
ed dynamics of four-dimensional Einstein gravity in de Sitter space. With
the accelerated expansion of the universe\, conformal zero modes accumulat
e at the horizon. The inflaton reresent the characteristic scale of the ze
ro mode distribution. Furthermore\, the introduction of an inflaton in the
low energy effective theory is necessary to preserve Lorentz symmetry. We
observe and postulate a duality between quantum effects in Einstein gravi
ty and classical evolutions in inflation/quintessence models. The duality
implies the effective action of Einstein gravity can be constructed as inf
lation/quintessence models with manifest general covariance. We show that
$g=G_N H^2/\\pi$: the only dimensionless coupling of $H^2$ (Hubble paramet
er) and $G_N$ (Newton's coupling) in Einstein gravity is screened by the i
nfrared logarithmic fluctuations of the conformal mode. We evaluate the on
e-loop $\\beta$ function of $g$ with respect to the cosmic time $\\log Ht$
as $\\beta(g)=-(1/2)g^2$\, i.e.\, $g$ is asymptotically free toward futur
e. We have identified de Sitter entropy $1/g$ with von Neumann entropy of
the conformal zero modes. The former evolves according to the $\\beta$ fun
ction and Gibbons-Hawking formula. The latter is found to increase by diff
usion in the stochastic process at the horizon in a consistent way. Our Un
iverse is located very close to the fixed point $g=0$ with a large entropy
. We discuss possible physical implications of our results such as logarit
hmic decay of dark energy.\n\nhttps://conference-indico.kek.jp:443/indico/
event/80/session/10/contribution/17
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/17
END:VEVENT
BEGIN:VEVENT
SUMMARY:Power of ZN-twisted boundary condition ~Resurgence and Continuity~
DTSTART;VALUE=DATE-TIME:20191204T023000Z
DTEND;VALUE=DATE-TIME:20191204T031000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-16@cern.ch
DESCRIPTION:Speakers: Prof. MISUMI\, Tatsuhiro ()\nQuantum field theories
on the circle-compactified spacetime are quite worth\ninvestigating in ter
ms of finite-T physics\, resurgence theory and volume\nindependence. In pa
rticular\, several evidences indicate that the\ncompactified theories with
ZN-twisted boundary condition maintain the\nvacuum structure of the origi
nal uncompactified theory. We discuss this\nproperty\, called adiabatic co
ntinuity\, and its implication on resurgence\ntheory by looking into a cou
ple of theories including CP^{N-1} model\,\nSchwinger model\, flag sigma m
odel\, and 4d QCD. The weapons we use in this\ntalk include semiclassical
analysis\, 't Hooft anomaly matching\, and lattice\nsimulations.\n\nhttps:
//conference-indico.kek.jp:443/indico/event/80/session/10/contribution/16
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/10/contri
bution/16
END:VEVENT
BEGIN:VEVENT
SUMMARY:Catalytic Creation of Baby Bubble Universe with Small Positive Cos
mological Constant
DTSTART;VALUE=DATE-TIME:20191203T054500Z
DTEND;VALUE=DATE-TIME:20191203T060000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-19@cern.ch
DESCRIPTION:Speakers: Prof. OOKOUCHI\, Yutaka ()\nWe investigate the decay
of metastable de Sitter\, Minkowski and anti-de Sitter vacua catalyzed by
a black hole and a cloud of strings. We apply the method to the creation
of the four dimensional bubble universe in the five dimensional anti-de Si
tter spacetime recently proposed by Banerjee\, Danielsson\, Dibitetto\, Gi
ri and Schillo. We study the bounce action for the creation and find that
the bubble with very small cosmological constant\, of order $\\Lambda^{(4)
}/M^4_4 \\sim 10^{-120}$\, is favored by the catalysis by assuming appropr
iate mass scales of the black hole and the cloud of strings to reproduce t
he present energy densities of matter and radiation in the bubble universe
.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/6/contri
bution/19
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/19
END:VEVENT
BEGIN:VEVENT
SUMMARY:Direct Calculation of Mutual Information of Distant Regions
DTSTART;VALUE=DATE-TIME:20191205T050000Z
DTEND;VALUE=DATE-TIME:20191205T051500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-32@cern.ch
DESCRIPTION:Speakers: Dr. SHIBA\, Noburo ()\nWe consider the (Renyi) mutua
l information\, I^(n) (A\,B)=S^(n)_A +S^(n)_B −S^(n)_ A∪B \, of distan
t compact spatial regions A and B in the vacuum state of a free scalar fie
ld. The distance r between A and B is much greater than their sizes R A\,B
. It is known that I^(n)_(A\,B)∼C^(n)_AB ⟨0|ϕ(r)ϕ(0)|0⟩^2 . We ob
tain the direct expression of C^(n)_AB for arbitrary regions A and B. We p
erform the analytical continuation of n and obtain the mutual information.
The direct expression is useful for the numerical computation. By using t
he direct expression\, we can compute directly I(A\,B) without computing S
_A \,S_B and S_A∪B respectively\, so it reduces significantly the amount
of computation.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/s
ession/6/contribution/32
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/32
END:VEVENT
BEGIN:VEVENT
SUMMARY:Duality Invariance of Kahler potentials on Generalized Flag Manifo
lds from Diverse Quiver Gauge Theories
DTSTART;VALUE=DATE-TIME:20191205T044500Z
DTEND;VALUE=DATE-TIME:20191205T050000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-31@cern.ch
DESCRIPTION:Speakers: Dr. OHASHI\, Keisuke ()\nWe present a systematic con
struction of K¨ahler potentials for various quiver gauge theories\, which
give pure realizations of the general flag manifolds as target manifolds.
There\, for arbitrary gener- alized flag manifolds with arbitrary complex
structures\, we rediscover the K¨ahler potentials given in the basic the
ory by Bando\, Kuramoto\, Maskawa and Uehara. In terms of these explicit f
orms\, we confirm that all cluster mutations between different quiver gaug
e theories always reproduce the same K¨ahler potential. Furthermore these
constructions and dualities are applied to Kahlerrian coset space G/H wit
h all classical groups G.\n\nhttps://conference-indico.kek.jp:443/indico/e
vent/80/session/6/contribution/31
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/31
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological order in the color-flavor locked phase of (3+1)-dimens
ional U(N) gauge-Higgs system
DTSTART;VALUE=DATE-TIME:20191204T064500Z
DTEND;VALUE=DATE-TIME:20191204T070000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-23@cern.ch
DESCRIPTION:Speakers: Dr. YOKOKURA\, Ryo ()\nWe study a (3+1)-dimensional
U(N) gauge theory with N-flavor fundamental scalar fields\, whose color-fl
avor locked (CFL) phase has topologically stable non-Abelian vortices. The
U(1) charge of the scalar fields must be Nk+1 for some integer k in order
for them to be in the representation of U(N) gauge group. This theory has
a Z_{Nk+1} one-form symmetry\, and it is spontaneously broken in the CFL
phase\, i.e.\, the CFL phase is topologically ordered if k is not 0. We al
so find that the world sheet of topologically stable vortices in CFL phase
can generate this one-form symmetry.\n\nhttps://conference-indico.kek.jp:
443/indico/event/80/session/6/contribution/23
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/23
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex poles and spectral functions of Landau gauge QCD and QCD-l
ike theories
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-51@cern.ch
DESCRIPTION:Speakers: Ms. HAYASHI\, Yui ()\nWe investigate the analytic st
ructures of the gluon and quark propagators of an effective model of the L
andau gauge QCD and QCD with many quark flavors\, which can be obtained by
adding effective mass terms to the standard Faddeev-Popov Lagrangian. We
derive general relationships between the number of complex poles and the s
ign of the spectral function under some assumptions on the asymptotic beha
viors of the propagator. Based on this relation\, in particular\, we find
a transition of the number of complex poles of the gluon propagator\, depe
nding on the number of quark flavors and their mass. We furthermore discus
s the formal aspects of complex poles.\n\nhttps://conference-indico.kek.jp
:443/indico/event/80/session/5/contribution/51
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/51
END:VEVENT
BEGIN:VEVENT
SUMMARY:Infrared renormalon in the supersymmetric $\\mathbb{C}P^{N-1}$ mod
el on $\\mathbb{R}\\times S^1$
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-36@cern.ch
DESCRIPTION:Speakers: Mr. MORIKAWA\, Okuto ()\nIn the leading order of the
large $N$ approximation\, we study the renormalon ambiguity in the gluon
(or more appropriately\, photon) condensate in the two-dimensional supersy
mmetric $\\mathbb{C}P^{N-1}$ model on $\\mathbb{R}\\times S^1$ with the $\
\mathbb{Z}_N$ twisted boundary conditions. In our large $N$ limit\, the co
mbination $\\Lambda R$\, where $\\Lambda$ is the dynamical scale and $R$ i
s the $S^1$ radius\, is kept fixed (we set $\\Lambda R\\ll1$ so that the p
erturbative expansion with respect to the coupling constant at the mass sc
ale $1/R$ is meaningful). We extract the perturbative part from the large
$N$ expression of the gluon condensate and obtain the corresponding Borel
transform $B(u)$. For $\\mathbb{R}\\times S^1$\, we find that the Borel si
ngularity at $u=2$\, which exists in the system on the un-compactified $\\
mathbb{R}^2$ and corresponds to twice the minimal bion action\, disappears
. Instead\, an unfamiliar renormalon singularity emerges at $u=3/2$ for th
e compactified space $\\mathbb{R}\\times S^1$. The semi-classical interpre
tation of this peculiar singularity is not clear because $u=3/2$ is not di
vidable by the minimal bion action. It appears that our observation for th
e system on $\\mathbb{R}\\times S^1$ prompts reconsideration on the semi-c
lassical bion picture of the infrared renormalon.\n\nhttps://conference-in
dico.kek.jp:443/indico/event/80/session/5/contribution/36
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/36
END:VEVENT
BEGIN:VEVENT
SUMMARY:A possible solution to the black hole puzzle in semi-classical gra
vity
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-35@cern.ch
DESCRIPTION:Speakers: Prof. MORITA\, Takeshi ()\nWe discuss that the black
hole geometry around the event horizon in semi-classical gravity could be
significantly different from that of the classical one. This is due to th
e Hawking radiation of the higher angular momentum modes of matter fields
that was believed to be irrelevant.\n\nhttps://conference-indico.kek.jp:44
3/indico/event/80/session/5/contribution/35
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/35
END:VEVENT
BEGIN:VEVENT
SUMMARY:TT-bar deformation in large N limit
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-52@cern.ch
DESCRIPTION:Speakers: Mr. HARUNA\, Junichi ()\nWe consider two dimensional
TT-bar deformed O(N) invariant massive scalar theory in large N limit\, a
nd investigate its renormalizability at 1/N ( next to leading ) level. As
a result\, we find that we need to renormalize the deformation parameter a
t leading level\, and non-local counterterms at 1/N (next to leading) leve
l. Also we find that positivity of state space is violated in the UV regio
n even after renormalization.\n\nhttps://conference-indico.kek.jp:443/indi
co/event/80/session/5/contribution/52
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/52
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum null energy condition\, weak cosmic censorship\, and holog
raphy
DTSTART;VALUE=DATE-TIME:20191205T051500Z
DTEND;VALUE=DATE-TIME:20191205T053000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-33@cern.ch
DESCRIPTION:Speakers: Dr. ISHIBASHI\, Akihiro ()\nWe discuss the compatibi
lity of AdS/CFT duality with the bulk and boundary causality which asserts
that the fastest null geodesic connecting any two boundary points must li
e entirely on the boundary. We show that if this type of causality fails w
ithout breaking the averaged null energy condition (ANEC)\, the weak cosmi
c censorship must be violated. We also discuss relationships between the b
ulk and boundary causality and a role of quantum null energy condition der
ived from ANEC in the context of AdS/CFT duality.\n\nhttps://conference-in
dico.kek.jp:443/indico/event/80/session/6/contribution/33
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/33
END:VEVENT
BEGIN:VEVENT
SUMMARY:Localization of gauge field on 3-branes and Higgs mechanism
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-55@cern.ch
DESCRIPTION:Speakers: Mr. KAWAGUCHI\, Masaki ()\nWe provide complete and s
elf-contained formulas about localization of massless/massive Abelian gaug
e fields on topological solitons in generic D dimensions via a field depen
dent gauge kinetic term. The localization takes place when a stabilizer (a
scalar field) is condensed in the topological soliton. We show that the l
ocalized gauge bosons are massless when the stabilizer is neutral. On the
other hand\, they become massive for the charged stabilizer as a consequen
ce of interplay between the localization mechanism and the Higgs mechanism
. finally\, As these application\, we show the relation with D-brane in su
perstring theory.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/
session/5/contribution/55
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/55
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sign flip triangulation of the 1-loop NMHV amplituhedron
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-37@cern.ch
DESCRIPTION:Speakers: Mr. KOJIMA\, Ryota ()\nIn this talk\, I will talk ab
out the triangulation of the amplituhedron. To obtain higher point amplitu
de from the general amplituhedron\, we need to triangulate it into a simpl
e one. There is some way to triangulate the amplituhedron and some of this
gives new representations of the amplitude. I will briefly explain the am
plituhedron and its property\, then I will talk about the new representati
on of the amplitude from the sign flip triangulation.\n\nhttps://conferenc
e-indico.kek.jp:443/indico/event/80/session/5/contribution/37
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/37
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gravitational Thomas Precession Effect as a New Cosmological Probe
DTSTART;VALUE=DATE-TIME:20191203T053000Z
DTEND;VALUE=DATE-TIME:20191203T054500Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-18@cern.ch
DESCRIPTION:Speakers: Mr. HEGDE\, Anand ()\nThomas Precession has been ext
ensively studied as a special relativistic effect.In this paper\, we study
Thomas like precession of spinning tops in the presence of gravitational
fields. To establish this effect we evaluate a system whose spin is define
d by a spin-four vector near a strong source of gravitational waves. It ca
n be shown that for a system like hydrogen atom in a strong gravitational
potential\, the energy of gravitational Thomas precession is a significant
effect. This effect causes an additional splitting of energy levels near
certain sources and this has been studied via quantum mechanical perturbat
ion theory. We further propose this effect can be observed in events invol
ving Primordial Black Holes\, Blackholes present in the center of galaxies
etc. In this paper we examine the signatures of distribution of primordia
l blackholes using aforementioned gravitational Thomas Precession. This ef
fect could possibly be a new window to probe the early universe.\n\nhttps:
//conference-indico.kek.jp:443/indico/event/80/session/6/contribution/18
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/6/contrib
ution/18
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entropy generation and decay of the cosmological constant in Liouv
ille gravity
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-57@cern.ch
DESCRIPTION:Speakers: Dr. HIROYUKI\, Kitamoto ()\nWe investigated quantum
infrared dynamics in 2D Liouville gravity\nwith a positive cosmological co
nstant and a large central charge\n$c>25$. Superhorizon fluctuations of th
e conformal mode of the\nmetric dynamically screen the cosmological consta
nt\, and the dS\nentropy increases simultaneously. We can identify the dS
entropy\nwith the von Neumann entropy of the conformal zero mode. This\nqu
antum time evolution can also be described by a classical\ninflation theor
y.\n\nhttps://conference-indico.kek.jp:443/indico/event/80/session/5/contr
ibution/57
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/57
END:VEVENT
BEGIN:VEVENT
SUMMARY:Emergent quantum spacetime from stochastic processes of matrix mod
els
DTSTART;VALUE=DATE-TIME:20191205T060000Z
DTEND;VALUE=DATE-TIME:20191205T090000Z
DTSTAMP;VALUE=DATE-TIME:20200218T185159Z
UID:indico-contribution-80-50@cern.ch
DESCRIPTION:Speakers: Mr. MATSUMOTO\, Nobuyuki ()\nTowards formulating qua
ntum gravity\, we present a mechanism of the emergence of spacetime geomet
ry from randomness. In [Fukuma-NM-Umeda\, [arXiv:1705.06097]]\, we defined
for a given stochastic process "the distance between configurations\," wh
ich enumerates the difficulty of transition. In this talk\, we consider la
rge-N matrix models\, in which we regard eigenvalues as spacetime coordina
tes. We define the distance from the effective stochastic process for one
eigenvalue\, and argue that this definition can be interpreted in noncriti
cal string theory as probing the classical geometry with a D-instanton. We
further show that\, when we apply our formalism to the U(N) matrix model
by treating the 't Hooft coupling as another dynamical variable\, an AdS b
lack hole geometry emerges in the extended configuration space\, where the
horizon corresponds to the Gross-Witten-Wadia phase transition point. Thi
s talk is based on [Fukuma-NM\, in preparation].\n\nhttps://conference-ind
ico.kek.jp:443/indico/event/80/session/5/contribution/50
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp:443/indico/event/80/session/5/contrib
ution/50
END:VEVENT
END:VCALENDAR