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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:20200403T200218Z
UID:indico-contribution-80-1608@conference-indico.kek.jp
DESCRIPTION:Speakers: Nobuyuki Matsumoto ()\nTowards formulating quantum g
ravity\, we present a mechanism of the emergence of spacetime geometry fro
m randomness. In [Fukuma-NM-Umeda\, [arXiv:1705.06097]]\, we defined for a
given stochastic process "the distance between configurations\," which en
umerates the difficulty of transition. In this talk\, we consider large-N
matrix models\, in which we regard eigenvalues as spacetime coordinates. W
e define the distance from the effective stochastic process for one eigenv
alue\, and argue that this definition can be interpreted in noncritical st
ring theory as probing the classical geometry with a D-instanton. We furth
er show that\, when we apply our formalism to the U(N) matrix model by tre
ating the 't Hooft coupling as another dynamical variable\, an AdS black h
ole geometry emerges in the extended configuration space\, where the horiz
on corresponds to the Gross-Witten-Wadia phase transition point. This talk
is based on [Fukuma-NM\, in preparation].\n\nhttps://conference-indico.ke
k.jp/event/80/contributions/1608/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1608/
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:20200403T200218Z
UID:indico-contribution-80-1607@conference-indico.kek.jp
DESCRIPTION:Speakers: Kitamoto Hiroyuki ()\nWe investigated quantum infrar
ed dynamics in 2D Liouville gravity\nwith a positive cosmological constant
and a large central charge\n$c>25$. Superhorizon fluctuations of the conf
ormal mode of the\nmetric dynamically screen the cosmological constant\, a
nd the dS\nentropy increases simultaneously. We can identify the dS entrop
y\nwith the von Neumann entropy of the conformal zero mode. This\nquantum
time evolution can also be described by a classical\ninflation theory.\n\n
https://conference-indico.kek.jp/event/80/contributions/1607/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1607/
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:20200403T200218Z
UID:indico-contribution-80-1606@conference-indico.kek.jp
DESCRIPTION:Speakers: Anand Hegde ()\nThomas Precession has been extensive
ly studied as a special relativistic effect.In this paper\, we study Thoma
s like precession of spinning tops in the presence of gravitational fields
. To establish this effect we evaluate a system whose spin is defined by a
spin-four vector near a strong source of gravitational waves. It can be s
hown that for a system like hydrogen atom in a strong gravitational potent
ial\, the energy of gravitational Thomas precession is a significant effec
t. This effect causes an additional splitting of energy levels near certai
n sources and this has been studied via quantum mechanical perturbation th
eory. We further propose this effect can be observed in events involving P
rimordial Black Holes\, Blackholes present in the center of galaxies etc.
In this paper we examine the signatures of distribution of primordial blac
kholes using aforementioned gravitational Thomas Precession. This effect c
ould possibly be a new window to probe the early universe.\n\nhttps://conf
erence-indico.kek.jp/event/80/contributions/1606/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1606/
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:20200403T200218Z
UID:indico-contribution-80-1605@conference-indico.kek.jp
DESCRIPTION:Speakers: Ryota Kojima ()\nIn this talk\, I will talk about th
e triangulation of the amplituhedron. To obtain higher point amplitude fro
m the general amplituhedron\, we need to triangulate it into a simple one.
There is some way to triangulate the amplituhedron and some of this gives
new representations of the amplitude. I will briefly explain the amplituh
edron and its property\, then I will talk about the new representation of
the amplitude from the sign flip triangulation.\n\nhttps://conference-indi
co.kek.jp/event/80/contributions/1605/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1605/
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:20200403T200218Z
UID:indico-contribution-80-1604@conference-indico.kek.jp
DESCRIPTION:Speakers: Masaki Kawaguchi ()\nWe provide complete and self-co
ntained formulas about localization of massless/massive Abelian gauge fiel
ds on topological solitons in generic D dimensions via a field dependent g
auge kinetic term. The localization takes place when a stabilizer (a scala
r field) is condensed in the topological soliton. We show that the localiz
ed gauge bosons are massless when the stabilizer is neutral. On the other
hand\, they become massive for the charged stabilizer as a consequence of
interplay between the localization mechanism and the Higgs mechanism. fina
lly\, As these application\, we show the relation with D-brane in superstr
ing theory.\n\nhttps://conference-indico.kek.jp/event/80/contributions/160
4/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1604/
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:20200403T200218Z
UID:indico-contribution-80-1603@conference-indico.kek.jp
DESCRIPTION:Speakers: Akihiro Ishibashi ()\nWe discuss the compatibility o
f AdS/CFT duality with the bulk and boundary causality which asserts that
the fastest null geodesic connecting any two boundary points must lie enti
rely on the boundary. We show that if this type of causality fails without
breaking the averaged null energy condition (ANEC)\, the weak cosmic cens
orship must be violated. We also discuss relationships between the bulk an
d boundary causality and a role of quantum null energy condition derived f
rom ANEC in the context of AdS/CFT duality.\n\nhttps://conference-indico.k
ek.jp/event/80/contributions/1603/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1603/
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:20200403T200218Z
UID:indico-contribution-80-1602@conference-indico.kek.jp
DESCRIPTION:Speakers: Junichi Haruna ()\nWe consider two dimensional TT-ba
r deformed O(N) invariant massive scalar theory in large N limit\, and inv
estigate its renormalizability at 1/N ( next to leading ) level. As a resu
lt\, we find that we need to renormalize the deformation parameter at lead
ing level\, and non-local counterterms at 1/N (next to leading) level. Als
o we find that positivity of state space is violated in the UV region even
after renormalization.\n\nhttps://conference-indico.kek.jp/event/80/contr
ibutions/1602/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1602/
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:20200403T200218Z
UID:indico-contribution-80-1601@conference-indico.kek.jp
DESCRIPTION:Speakers: Takeshi Morita ()\nWe discuss that the black hole ge
ometry around the event horizon in semi-classical gravity could be signifi
cantly different from that of the classical one. This is due to the Hawkin
g radiation of the higher angular momentum modes of matter fields that was
believed to be irrelevant.\n\nhttps://conference-indico.kek.jp/event/80/c
ontributions/1601/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1601/
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:20200403T200218Z
UID:indico-contribution-80-1600@conference-indico.kek.jp
DESCRIPTION:Speakers: Okuto Morikawa ()\nIn the leading order of the large
$N$ approximation\, we study the renormalon ambiguity in the gluon (or mo
re appropriately\, photon) condensate in the two-dimensional supersymmetri
c $\\mathbb{C}P^{N-1}$ model on $\\mathbb{R}\\times S^1$ with the $\\mathb
b{Z}_N$ twisted boundary conditions. In our large $N$ limit\, the combinat
ion $\\Lambda R$\, where $\\Lambda$ is the dynamical scale and $R$ is the
$S^1$ radius\, is kept fixed (we set $\\Lambda R\\ll1$ so that the perturb
ative expansion with respect to the coupling constant at the mass scale $1
/R$ is meaningful). We extract the perturbative part from the large $N$ ex
pression of the gluon condensate and obtain the corresponding Borel transf
orm $B(u)$. For $\\mathbb{R}\\times S^1$\, we find that the Borel singular
ity at $u=2$\, which exists in the system on the un-compactified $\\mathbb
{R}^2$ and corresponds to twice the minimal bion action\, disappears. Inst
ead\, an unfamiliar renormalon singularity emerges at $u=3/2$ for the comp
actified space $\\mathbb{R}\\times S^1$. The semi-classical interpretation
of this peculiar singularity is not clear because $u=3/2$ is not dividabl
e by the minimal bion action. It appears that our observation for the syst
em on $\\mathbb{R}\\times S^1$ prompts reconsideration on the semi-classic
al bion picture of the infrared renormalon.\n\nhttps://conference-indico.k
ek.jp/event/80/contributions/1600/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1600/
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:20200403T200218Z
UID:indico-contribution-80-1599@conference-indico.kek.jp
DESCRIPTION:Speakers: Yui Hayashi ()\nWe investigate the analytic structur
es of the gluon and quark propagators of an effective model of the Landau
gauge QCD and QCD with many quark flavors\, which can be obtained by addin
g effective mass terms to the standard Faddeev-Popov Lagrangian. We derive
general relationships between the number of complex poles and the sign of
the spectral function under some assumptions on the asymptotic behaviors
of the propagator. Based on this relation\, in particular\, we find a tran
sition of the number of complex poles of the gluon propagator\, depending
on the number of quark flavors and their mass. We furthermore discuss the
formal aspects of complex poles.\n\nhttps://conference-indico.kek.jp/event
/80/contributions/1599/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1599/
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:20200403T200218Z
UID:indico-contribution-80-1598@conference-indico.kek.jp
DESCRIPTION:Speakers: Ryo Yokokura ()\nWe study a (3+1)-dimensional U(N) g
auge theory with N-flavor fundamental scalar fields\, whose color-flavor l
ocked (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 t
hem 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 also fin
d that the world sheet of topologically stable vortices in CFL phase can g
enerate this one-form symmetry.\n\nhttps://conference-indico.kek.jp/event/
80/contributions/1598/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1598/
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:20200403T200218Z
UID:indico-contribution-80-1597@conference-indico.kek.jp
DESCRIPTION:Speakers: Keisuke Ohashi ()\nWe present a systematic construct
ion 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 struc
tures\, we rediscover the K¨ahler potentials given in the basic theory by
Bando\, Kuramoto\, Maskawa and Uehara. In terms of these explicit forms\,
we confirm that all cluster mutations between different quiver gauge theo
ries always reproduce the same K¨ahler potential. Furthermore these const
ructions and dualities are applied to Kahlerrian coset space G/H with all
classical groups G.\n\nhttps://conference-indico.kek.jp/event/80/contribut
ions/1597/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1597/
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:20200403T200218Z
UID:indico-contribution-80-1596@conference-indico.kek.jp
DESCRIPTION:Speakers: Noburo Shiba ()\nWe consider the (Renyi) mutual info
rmation\, I^(n) (A\,B)=S^(n)_A +S^(n)_B −S^(n)_ A∪B \, of distant comp
act spatial regions A and B in the vacuum state of a free scalar field. Th
e 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 obtain t
he direct expression of C^(n)_AB for arbitrary regions A and B. We perform
the analytical continuation of n and obtain the mutual information. The d
irect expression is useful for the numerical computation. By using the dir
ect 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 co
mputation.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1596
/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1596/
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:20200403T200218Z
UID:indico-contribution-80-1595@conference-indico.kek.jp
DESCRIPTION:Speakers: Yutaka Ookouchi ()\nWe investigate the decay of meta
stable 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 f
our dimensional bubble universe in the five dimensional anti-de Sitter spa
cetime recently proposed by Banerjee\, Danielsson\, Dibitetto\, Giri and S
chillo. We study the bounce action for the creation and find that the bubb
le with very small cosmological constant\, of order $\\Lambda^{(4)}/M^4_4
\\sim 10^{-120}$\, is favored by the catalysis by assuming appropriate mas
s scales of the black hole and the cloud of strings to reproduce the prese
nt energy densities of matter and radiation in the bubble universe.\n\nhtt
ps://conference-indico.kek.jp/event/80/contributions/1595/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1595/
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:20200403T200218Z
UID:indico-contribution-80-1594@conference-indico.kek.jp
DESCRIPTION:Speakers: Tatsuhiro Misumi ()\nQuantum field theories on the c
ircle-compactified spacetime are quite worth\ninvestigating in terms of fi
nite-T physics\, resurgence theory and volume\nindependence. In particular
\, several evidences indicate that the\ncompactified theories with ZN-twis
ted boundary condition maintain the\nvacuum structure of the original unco
mpactified theory. We discuss this\nproperty\, called adiabatic continuity
\, and its implication on resurgence\ntheory by looking into a couple of t
heories including CP^{N-1} model\,\nSchwinger model\, flag sigma model\, a
nd 4d QCD. The weapons we use in this\ntalk include semiclassical analysis
\, 't Hooft anomaly matching\, and lattice\nsimulations.\n\nhttps://confer
ence-indico.kek.jp/event/80/contributions/1594/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1594/
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:20200403T200218Z
UID:indico-contribution-80-1593@conference-indico.kek.jp
DESCRIPTION:Speakers: Yoshihisa Kitazawa ()\nWe investigate infrared dynam
ics of four-dimensional Einstein gravity in de Sitter space. With the acce
lerated expansion of the universe\, conformal zero modes accumulate at the
horizon. The inflaton reresent the characteristic scale of the zero mode
distribution. Furthermore\, the introduction of an inflaton in the low ene
rgy effective theory is necessary to preserve Lorentz symmetry. We observe
and postulate a duality between quantum effects in Einstein gravity and c
lassical evolutions in inflation/quintessence models. The duality implies
the effective action of Einstein gravity can be constructed as inflation/q
uintessence models with manifest general covariance. We show that $g=G_N H
^2/\\pi$: the only dimensionless coupling of $H^2$ (Hubble parameter) and
$G_N$ (Newton's coupling) in Einstein gravity is screened by the infrared
logarithmic fluctuations of the conformal mode. We evaluate the one-loop $
\\beta$ function of $g$ with respect to the cosmic time $\\log Ht$ as $\\b
eta(g)=-(1/2)g^2$\, i.e.\, $g$ is asymptotically free toward future. We ha
ve identified de Sitter entropy $1/g$ with von Neumann entropy of the conf
ormal zero modes. The former evolves according to the $\\beta$ function an
d Gibbons-Hawking formula. The latter is found to increase by diffusion in
the stochastic process at the horizon in a consistent way. Our Universe i
s located very close to the fixed point $g=0$ with a large entropy. We dis
cuss possible physical implications of our results such as logarithmic dec
ay of dark energy.\n\nhttps://conference-indico.kek.jp/event/80/contributi
ons/1593/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1593/
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:20200403T200218Z
UID:indico-contribution-80-1592@conference-indico.kek.jp
DESCRIPTION:Speakers: Mitsuyo Suzuki ()\nI will discuss perturbation theor
y of supersymmetric gradient flow in 4D N = 1 SQCD. The perturbation theor
y consists of a perturbative expansion of 4D SQCD and an iterative expansi
on of the flow equation. In order to prove UV-finiteness of flow theory\,
it is necessary to calculate its correlation functions and to construct a
d+1-dimensional theory which reproduces the same perturbation series.\n\nh
ttps://conference-indico.kek.jp/event/80/contributions/1592/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1592/
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:20200403T200218Z
UID:indico-contribution-80-1591@conference-indico.kek.jp
DESCRIPTION:Speakers: Atis Yosprakob ()\nThe tensor renormalization group
method is a powerful tool to study \nlattice models\, which works even wit
h models that have sign problem. \nHowever\, so far\, its application to g
auge 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 exactly so
lvable. We are able to extract the \nlarge-N behaviors of the model such a
s the Eguchi-Kawai reduction and \nthe Gross-Witten phase transition. We a
lso study the model with a theta-\nterm\, which has the sign problem\, and
reproduce exact results.\n\nhttps://conference-indico.kek.jp/event/80/con
tributions/1591/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1591/
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:20200403T200218Z
UID:indico-contribution-80-1590@conference-indico.kek.jp
DESCRIPTION:Speakers: Yoshimasa Hidaka ()\nI discuss possible phases of QC
D at finite temperature\, density and/or strong fields. In particular\, I
discuss the possibility of topological phases in dense QCD matter.\n\nhttp
s://conference-indico.kek.jp/event/80/contributions/1590/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1590/
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:20200403T200218Z
UID:indico-contribution-80-1589@conference-indico.kek.jp
DESCRIPTION:Speakers: Takuya Hirose ()\nWe calculate one-loop corrections
to the mass for the zero mode of scalar field in a six-dimensional Yang-Mi
lls theory compactified on a torus with magnetic flux. It is shown that th
ese corrections are exactly cancelled thanks to a shift symmetry under the
translation in extra spaces. This result is expected from the fact that t
he zero mode of scalar field is a Nambu-Goldstone boson of the translation
al invariance in extra spaces.\n\nhttps://conference-indico.kek.jp/event/8
0/contributions/1589/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1589/
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:20200403T200218Z
UID:indico-contribution-80-1588@conference-indico.kek.jp
DESCRIPTION:Speakers: Kazuya Yonekura ()\nI will talk about a nonperturbat
ive constraint on QCD thermal phase transition. First\, I discuss a rigoro
us constraint from 't Hooft anomaly matching when the quarks are massless
and we introduce an imaginary baryon chemical potential at the Roberge-Wei
ss point. Then\, I discuss the reason why I think the constraint is also r
elevant for the QCD phase transition without any imaginary chemical potent
ial and with realistic quark masses.\n\nhttps://conference-indico.kek.jp/e
vent/80/contributions/1588/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1588/
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:20200403T200218Z
UID:indico-contribution-80-1587@conference-indico.kek.jp
DESCRIPTION:Speakers: Masafumi Fukuma ()\nThe tempered Lefschetz thimble m
ethod (TLTM) [arXiv:1703.00861] is a parallel-tempering algorithm towards
solving the numerical sign problem. It uses the flow time of the antiholom
orphic gradient flow as a tempering parameter and is expected to tame both
the sign and multimodal problems simultaneously. In this talk\, after rev
iewing the TLTM\, we apply the method to various problems\, including the
quantum Monte Carlo simulation of the Hubbard model away from half-filling
and the chiral random matrix models with finite temperature and finite ch
emical potential.\n\nhttps://conference-indico.kek.jp/event/80/contributio
ns/1587/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1587/
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:20200403T200218Z
UID:indico-contribution-80-1586@conference-indico.kek.jp
DESCRIPTION:Speakers: Song He ()\nhttps://conference-indico.kek.jp/event/8
0/contributions/1586/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1586/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swampland Phenomenology
DTSTART;VALUE=DATE-TIME:20191206T003000Z
DTEND;VALUE=DATE-TIME:20191206T011000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1585@conference-indico.kek.jp
DESCRIPTION:Speakers: Masahito Yamazaki ()\nhttps://conference-indico.kek.
jp/event/80/contributions/1585/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1585/
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:20200403T200218Z
UID:indico-contribution-80-1584@conference-indico.kek.jp
DESCRIPTION:Speakers: Haruya Suzuki ()\nHigher spin (HS) gauge theory may
be regarded as a generalization of the electromagnetic theory of a spin-1
photon and the linearized gravity of a spin-2 graviton. String theory whic
h has infinitely many massive modes may be seen as a broken phase of the H
S gauge symmetry. The higher spin gauge theory is expected to gain a deepe
r understanding of AdS/CFT duality. To gain more insight into the duality\
, It is necessary to understand quantum spectrum of string in AdS. This is
not achieved yet\, because the actin of higher spin theory is not complet
ely known in AdS. In this presentation\, we consider cubic interaction ver
tices of bosonic HS fields with spin s1\, s2 and s3\, in flat and AdS spac
es.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1584/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1584/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Deep into the Amplituhedron
DTSTART;VALUE=DATE-TIME:20191204T053000Z
DTEND;VALUE=DATE-TIME:20191204T061000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1583@conference-indico.kek.jp
DESCRIPTION:Speakers: Jaroslav Trnka ()\nhttps://conference-indico.kek.jp/
event/80/contributions/1583/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1583/
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:20200403T200218Z
UID:indico-contribution-80-1582@conference-indico.kek.jp
DESCRIPTION:Speakers: Hiroshi Suzuki ()\nAn interesting possibility that t
he ambiguity in perturbation theory caused by the IR renormalon is cancell
ed by the instability associated with a semi-classical object called bion
has been suggested in the context of the resurgence program of asymptotica
lly-free quantum field theories. To reinforce this picture on the IR renor
malon\, the understanding of the IR renormalon in a compactified space suc
h as $R^{D−1}\\times S^1$ seems to be a basic premise. In this talk\, I
report our recent analysis on the IR renormalon in the gluon condensate 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-boson\, whic
h acquires the twisted momentum from the boundary conditions\, gives rise
to the renormalon ambiguity that is identical to that in the system in the
un-compactified space\, $R^4$. This situation is completely different fro
m that in the 2D $CP^{N-1}$ model on $R^1\\times S^1$ (the analyses on the
latter will be presented by Dr. Takaura and Mr. Morikawa).\n\nhttps://con
ference-indico.kek.jp/event/80/contributions/1582/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1582/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Resurgence and Phase Transitions
DTSTART;VALUE=DATE-TIME:20191204T013000Z
DTEND;VALUE=DATE-TIME:20191204T021000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1581@conference-indico.kek.jp
DESCRIPTION:Speakers: Gerald Dunne ()\nResurgent asymptotics unifies pertu
rbative and non-perturbative methods in quantum mechanics and quantum fiel
d theory\, and gives a new perspective on phase transitions. I present an
introduction to the basic ideas behind resurgence and several physical exa
mples of phase transitions that can be probed this way\, including the fin
ite N approach to large N phase transitions. I also discuss new resurgent
extrapolation methods that can extend asymptotic expansions throughout the
complex plane.\n\nhttps://conference-indico.kek.jp/event/80/contributions
/1581/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1581/
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:20200403T200218Z
UID:indico-contribution-80-1580@conference-indico.kek.jp
DESCRIPTION:Speakers: Masatoshi Yamada ()\nAsymptotically safe quantum gra
vity is one of candidates for quantum gravity. It is essential that there
exists a non-trivial fixed point for gravitational couplings. In this talk
we review the current status of the asymptotic safety scenario for gravit
y-matter systems.\n\nhttps://conference-indico.kek.jp/event/80/contributio
ns/1580/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1580/
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:20200403T200218Z
UID:indico-contribution-80-1579@conference-indico.kek.jp
DESCRIPTION:Speakers: Nobuyoshi Ohta ()\nWe explain an approach to formula
te quantum gravity within the framework of local quantum field theory usin
g functional renormalization group. called asymptotic safety. Starting how
the approach is formulated\, we intoduce the notion of critical surface a
nd discuss its dimensionality. Several physical aspects of this approach a
re also discussed including quantum effective action derived from renormal
ization group equation.\n\nhttps://conference-indico.kek.jp/event/80/contr
ibutions/1579/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1579/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Gravity and Naturalness
DTSTART;VALUE=DATE-TIME:20191203T013000Z
DTEND;VALUE=DATE-TIME:20191203T021000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1577@conference-indico.kek.jp
DESCRIPTION:Speakers: Hikaru Kawai ()\nWe discuss the possibility that nat
uralness can be understood as an effect of quantum gravity. In particular\
, we will consider a mechanism by which the electroweak scale is naturally
obtained from the Planck scale.\n\nhttps://conference-indico.kek.jp/event
/80/contributions/1577/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1577/
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:20200403T200218Z
UID:indico-contribution-80-1574@conference-indico.kek.jp
DESCRIPTION:Speakers: Shota Fujiwara ()\nWe study the orbifold type of AdS
5/CFT4 correspondence for ﬁnite N by using the superconformal index. Esp
ecially\, we calculate the ﬁnite N corrections to the superconformal ind
ex from the dual gravity theory. Our method is based on the assumption tha
t D3-branes wrapped around three-cycles in the internal space reproduce th
e ﬁnite N corrections. As a result we find this approach actually gives
the known superconformal index (localization result) for leading correctio
ns for orbifold quiver gauge theories.\n\nhttps://conference-indico.kek.jp
/event/80/contributions/1574/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1574/
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:20200403T200218Z
UID:indico-contribution-80-1573@conference-indico.kek.jp
DESCRIPTION:Speakers: Katsuta Sakai ()\nWe study the IIB matrix model in a
n interpretation where the matrices are differential operators defined on
curved spacetimes. In this interpretation\, coefficients of higher derivat
ive operators formally appear to be massless higher spin fields. With my p
oster\, we discuss whether the unitary symmetry of the matrices includes a
ppropriate higher spin gauge symmetries. We find that the additional auxil
iary fields need to be introduced in order to formulate the manifest symme
tries\, with which potentially unstable components are eliminated. As a re
sult\, we observe that the independent physical DoF are the transverse com
ponents of that symmetric field\, and that the theory describes the corres
ponding higher spin field. We also find that the field is not the Fronsdal
field\, rather the generalization of curvature.\n\nhttps://conference-ind
ico.kek.jp/event/80/contributions/1573/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1573/
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:20200403T200218Z
UID:indico-contribution-80-1572@conference-indico.kek.jp
DESCRIPTION:Speakers: Issei Koga ()\nWe study the instability of the Higgs
vacuum caused by a cloud of strings. By the catalysis\, the decay rate of
the vacuum is highly enhanced and when the energy density of the cloud is
larger than the critical value\, the semi-classical vacuum decay occurs.
We also discuss the relation between the cloud of strings and observationa
l constraints on cosmic strings in terms of the catalysis\, providing cons
traints on the parameters of the Higgs potential.\n\nhttps://conference-in
dico.kek.jp/event/80/contributions/1572/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1572/
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:20200403T200218Z
UID:indico-contribution-80-1571@conference-indico.kek.jp
DESCRIPTION:Speakers: Tatsuya Mori ()\nWe study the finite N AdS/CFT corre
spondence between the Type IIB string theories on AdS5×SE5 and quiver gau
ge theories\, where SE5 is a five-dimensional Sasaki-Einstein manifold. Ou
r assumption is that D3-branes wrapping on the three-cycles in the interna
l space give the finite N corrections to the index. We calculate the index
of wrapped D3-branes and get the non-trivial coincidence for leading fini
te N corrections in comparison with the localization results from the gaug
e theory.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1571/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1571/
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:20200403T200218Z
UID:indico-contribution-80-1570@conference-indico.kek.jp
DESCRIPTION:Speakers: Hikaru Ohta ()\nWe study the behavior of the effecti
ve potential between revolving Dp-branes at all ranges of the distance $r$
\, interpolating regions on which r is larger and smaller than the string
length. Since the one-loop open string amplitude cannot be calculated exac
tly\, we instead employ an efficient method of partial modular transformat
ion. The method is to perform the modular transformation partially in the
moduli parameter and rewrite the amplitude into a sum of contributions fro
m both of the open and closed string massless modes. It is nevertheless fr
ee from the double counting and can approximate the open string amplitudes
with less than 3% accuracy. From the D-brane effective field theory point
of view\, this amounts to calculating the one-loop threshold corrections
of infinitely many open string massive modes. We show that threshold corre
ctions 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 super
symmetry breaking. This cancellation suggests a possibility to solve the h
ierarchy problem of the Higgs mass in high scale supersymmetry breaking mo
dels.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1570/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1570/
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:20200403T200218Z
UID:indico-contribution-80-1569@conference-indico.kek.jp
DESCRIPTION:Speakers: Reona Arai ()\nRecently concrete models of 4d N=3 su
perconformal field theories called S-fold theories are constructed by Garc
ia-Etxebarria and Regalado. Although it is difficult to study these theori
es due to the lack of the Lagrangian description and the strong coupling\,
it is expected that there is a non-trivial supersymmetry enhancement for
rank one and two theories by Aharony and Tachikawa. In this poster\, we ev
aluate the first non-trivial finite rank corrections to the superconformal
index of these theories by using AdS/CFT correspondence and check the sup
ersymmetry enhancement. To evaluate the index in finite rank\, we mainly f
ocus on the D3-branes wrapping a non-trivial three cycle on AdS side inter
preted as Pfaffian-like operators on CFT side. We see that our results agr
ee with the results expected from the supersymmetry enhancement.\n\nhttps:
//conference-indico.kek.jp/event/80/contributions/1569/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1569/
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:20200403T200218Z
UID:indico-contribution-80-1568@conference-indico.kek.jp
DESCRIPTION:Speakers: Akira Matsumoto ()\nThe Monte Carlo simulation of ga
uge theories with a theta term is quite difficult due to the sign problem.
The complex Langevin method is a promising approach to solve this problem
. We applied this method to the 2D U(1) gauge theory\, which is analytical
ly solvable\, in order to check the validity of the method. We were able t
o reproduce the exact results in the whole region of -pi \n\nhttps://confe
rence-indico.kek.jp/event/80/contributions/1568/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1568/
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:20200403T200218Z
UID:indico-contribution-80-1567@conference-indico.kek.jp
DESCRIPTION:Speakers: Kazushi Yamashiro ()\nWe study how information geome
try is described by bulk geometry in the gauge/gravity correspondence. We
consider a quantum information metric that measures the distance between t
he ground states of a CFT and a theory obtained by perturbing the CFT. Usi
ng the GKP-Witten relation\, we find a universal formula that expresses th
e quantum information metric by a geometrical quantity in a back-reacted b
ulk geometry.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1
567/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1567/
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:20200403T200218Z
UID:indico-contribution-80-1566@conference-indico.kek.jp
DESCRIPTION:Speakers: Ping Kwan Man ()\nIn this talk\, we are going to tal
k about inflation dynamics by KKLT-like model modified by a new Fayet-ilio
poulos (FI) term. KKLT model\, motivated by superstring theory\, gives the
AdS vacuum\, which is phenomenologically forbidden. Although previous stu
dies solved this problem by adding a D3 bar or D7 contribution to uplift t
he vacuum to zero\, it is not flat enough to provide the initial slow-roll
environment. In this talk\, we show that a new FI term without R gauged s
ymmetry can provide this. We also show the parameters of dS vacuum and inf
lation dynamics.\n\nhttps://conference-indico.kek.jp/event/80/contribution
s/1566/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1566/
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:20200403T200218Z
UID:indico-contribution-80-1565@conference-indico.kek.jp
DESCRIPTION:Speakers: Hiromasa Takaura ()\nRecently\, it was conjectured t
hat the perturbative ambiguity known as the renormalon is canceled against
the nonperturbative semiclassical object called bion. This conjecture exp
ects this kind of cancellation in the circle compactified spacetime\, in w
hich the bion solution is found\, as a premise. To examine this conjecture
\, we study the renormalon structure in the compactified spacetime under t
he assumption typically realized in large N theories\, and find that renor
malon is significantly affected by the compactification. This seems to be
against naive expectation of recent bion scenario.\n\nhttps://conference-i
ndico.kek.jp/event/80/contributions/1565/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1565/
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:20200403T200218Z
UID:indico-contribution-80-1564@conference-indico.kek.jp
DESCRIPTION:Speakers: Sota Hanazawa ()\nWe have examined the BRS invarianc
e of the open pure spinor superstring to derive equations of motion for a
supersymmetric D$p$-brane\, which should be induced from the DBI action an
d the Wess-Zumino action. These equations are consistent with the dimensio
nal reduction of equations for a supersymmetric D9-brane obtained by Berko
vits and Pershin. They also analyzed non-abelian backgrounds up to quadrat
ic order in ``boundary fermions''\, which are world-volume fermions on D-b
ranes and represent the Chan-Paton factors for open strings. In this talk\
, we will extend previous results to supersymmetric non-abelian D-brane eq
uations including all boundary fermions.\n\nhttps://conference-indico.kek.
jp/event/80/contributions/1564/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1564/
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:20200403T200218Z
UID:indico-contribution-80-1563@conference-indico.kek.jp
DESCRIPTION:Speakers: Yasuhiro Sekino ()\nGauge/gravity correspondence 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 clos
ely related to the proof is what kind of correspondence exists\, if any\,
when gauge theory is weakly coupled. We report progress about this limit f
or the case associated with D$p$-branes ($0\\le p\\le 4$)\, namely\, the d
uality between the $(p+1)$-dimensional maximally supersymmetric Yang-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-poi
nt functions of certain operators in gauge theory obey power law with 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 superstring the
ory on the strongly curved background. The operator that we consider is of
the form ${\\rm Tr}(Z^J)$\, where $Z$ is a complex combination of two sca
lar fields. We assume that the corresponding string has the worldsheet spa
tial direction discretized into $J$ bits\, and use the fact that these bit
s become independent particles when string tension is zero.\n\nhttps://con
ference-indico.kek.jp/event/80/contributions/1563/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1563/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Does Boundary Distinguish Complexities?
DTSTART;VALUE=DATE-TIME:20191204T080500Z
DTEND;VALUE=DATE-TIME:20191204T082000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1562@conference-indico.kek.jp
DESCRIPTION:Speakers: Yoshiki Sato ()\nRecently\, Chapman et al. argued th
at holographic complexities for defects distinguish action from volume. Mo
tivated by their work\, we study complexity of quantum states in conformal
field theory with boundary. In generic two-dimensional BCFT\, we work on
the path-integral optimization which gives one of field-theoretic definiti
ons for the complexity. We also perform holographic computations of the co
mplexity in Takayanagi's AdS/BCFT model following by the "complexity = vol
ume" conjecture and "complexity = action" conjecture. We find that increme
nts of the complexity due to the boundary show the same divergent structur
es in these models except for the CA complexity in the AdS3/BCFT2 model as
the argument by Chapman et al. Thus\, we conclude that boundary does not
distinguish the complexities in general.\n\nhttps://conference-indico.kek.
jp/event/80/contributions/1562/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1562/
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:20200403T200218Z
UID:indico-contribution-80-1561@conference-indico.kek.jp
DESCRIPTION:Speakers: Ken Kikuchi ()\nWe study anomalies for a discrete in
ternal global symmetry $G$ in two-dimensional conformal field theories bas
ed on twisted torus partition functions. The 't Hooft anomaly of $G$ can b
e seen from the noncommutativity of two symmetry lines inserted along 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 appro
ach as well as the cohomology classification. The obstruction for orbifold
ing has been recently interpreted as a mixed anomaly between $G$ and large
diffeomorphisms. We clarify the relations among 't Hooft anomaly-free\, o
rbifolding condition and invariant boundary state condition\, focusing on
Wess-Zumino-Witten models.\n\nhttps://conference-indico.kek.jp/event/80/co
ntributions/1561/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1561/
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:20200403T200218Z
UID:indico-contribution-80-1560@conference-indico.kek.jp
DESCRIPTION:Speakers: Yoshinori Matsuo ()\nA new method to study nuclear p
hysics via holographic QCD is proposed. Multiple baryons in the Sakai-Sugi
moto background are described by a matrix model which is a low energy effe
ctive theory of D-branes of the baryon vertices. We study the quantum mech
anics of the matrix model and calculate the eigenstates of the Hamiltonian
. The obtained states are found to coincide with known nuclear and baryoni
c states\, and have appropriate statistics and charges. Calculated spectra
of the baryon/nucleus for small baryon numbers show good agreement with e
xperimental data. The model partially explains even the magic numbers of l
ight nuclei\, N=2\, 8 and 20.\n\nhttps://conference-indico.kek.jp/event/80
/contributions/1560/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1560/
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:20200403T200218Z
UID:indico-contribution-80-1559@conference-indico.kek.jp
DESCRIPTION:Speakers: Xuanting Ji ()\nWe study the chiral vortical conduct
ivity in a holographic Weyl semimetal model\, which describes a topologica
l phase transition from the strongly coupled topologically nontrivial phas
e to a trivial phase. We focus on the temperature dependence of the chiral
vortical conductivity where the mixed gauge-gravitational anomaly plays a
crucial role. After a proper renormalization of the chiral vortical condu
ctivity by the anomalous Hall conductivity and temperature squared\, we fi
nd that at low temperature in both the Weyl semimetal phase and the quantu
m critical region this renormalized ratio stays as universal constants. Mo
re intriguingly\, this ratio in the quantum critical region depends only o
n the emergent Lifshitz scaling exponent at the quantum critical point.\n\
nhttps://conference-indico.kek.jp/event/80/contributions/1559/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1559/
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:20200403T200218Z
UID:indico-contribution-80-1558@conference-indico.kek.jp
DESCRIPTION:Speakers: Takahiro Nishinaka ()\nhttps://conference-indico.kek
.jp/event/80/contributions/1558/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1558/
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:20200403T200218Z
UID:indico-contribution-80-1557@conference-indico.kek.jp
DESCRIPTION:Speakers: Masataka Matsumoto ()\nWe study the phase structure
associated with the chiral symmetry in the D3-D7 model. We find the non-eq
uilibrium phase transition for massless quarks in the presence of a consta
nt current and a magnetic field. This non-equilibrium phase transition is
related to the chiral symmetry breaking. We also discover the tricritical
point in the phase diagram.\n\nhttps://conference-indico.kek.jp/event/80/c
ontributions/1557/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1557/
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:20200403T200218Z
UID:indico-contribution-80-1556@conference-indico.kek.jp
DESCRIPTION:Speakers: Hitomi TASHIRO (SOKENDAI)\nWe study the unitary one-
matrix model with the logarithmic potential. It has been known that a herm
itian one-matrix model with a logarithmic potential yields the prepotentia
l of 4d N=2 SU(2) SUSY gauge theory as its large-N free energy. We give a
rigorous proof that the unitary matrix model with the potential of the sam
e form as the hermitian matrix model for 4d N=2 Nf=2 SU(2) SUSY gauge theo
ry yields the identical prepotential of it\, although the parameter identi
fications of each model are slightly different. This result has been antic
ipated by Itoyama\, Oota\, and Yano.\n\nhttps://conference-indico.kek.jp/e
vent/80/contributions/1556/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1556/
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:20200403T200218Z
UID:indico-contribution-80-1555@conference-indico.kek.jp
DESCRIPTION:Speakers: Mitsuaki HIRASAWA (SOKENDAI)\nThe type IIB matrix mo
del has been studied as a candidate of non-perturbative formulation of sup
erstring theory. In particular\, by Monte Carlo simulation of the Lorentzi
an type IIB matrix model\, (3+1)-dimensional expanding space-time was show
n to emerge dynamically. With its detailed analysis\, we found that the em
ergent 3-dimensional space is essentially described by the Pauli matrices\
, we call this structure as the Pauli-matrix structure. In fact\, the Mont
e Carlo simulation of the Lorentzian type IIB matrix model has the sign pr
oblem. Therefore\, we had used an approximation to avoid the sign problem
in the previous works. However\, there is a subtlety in the approximation\
, and it might cause the Pauli-matrix structure. In this work\, we general
ize 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 comple
x Langevin simulation of the generalized model to overcome the sign proble
m. As a result\, we can see a deviation from the Pauli-matrix structure as
we approach to the original model without losing the expanding behavior.\
n\nhttps://conference-indico.kek.jp/event/80/contributions/1555/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1555/
END:VEVENT
BEGIN:VEVENT
SUMMARY:String Geometry Phenomenology
DTSTART;VALUE=DATE-TIME:20191204T083500Z
DTEND;VALUE=DATE-TIME:20191204T085000Z
DTSTAMP;VALUE=DATE-TIME:20200403T200218Z
UID:indico-contribution-80-1554@conference-indico.kek.jp
DESCRIPTION:Speakers: Matsuo Sato ()\nString geometry theory is one of can
didates of the non-perturbative formulation of string theory. In order to
derive low-energy phenomena\, we first need to clarify how supergravity ba
ckground fields\, which represent the space-time and the internal space\,
are described in string geometry theory. In this presentation\, we show th
at arbitrary configurations of the heterotic supergravity background field
s are embedded in configurations of fields of string geometry theory. Espe
cially\, the configurations of string geometry satisfy equations of motion
s of string geometry theory if the embedded supergravity backgrounds satis
fy the equations of motions of the heterotic supergravity. We can obtain t
he perturbative heterotic string theory on the flat space-time if we take
the Newtonian limit around the configuration of string geometry correspond
ing to the flat space-time. Thus\, we expect that we can also obtain the p
erturbative heterotic string theory on the supergravity backgrounds if we
take the Newtonian limit around the configurations of string geometry corr
esponding to the supergravity backgrounds.\n\nhttps://conference-indico.ke
k.jp/event/80/contributions/1554/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1554/
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:20200403T200218Z
UID:indico-contribution-80-1553@conference-indico.kek.jp
DESCRIPTION:Speakers: Hajime Otsuka ()\nWe propose matter wavefunctions 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 models. In
the blow-down limit of T^2/Z_N orbifolds\, the obtained wavefunctions of
chiral zero-modes result in those on the magnetized T^2/Z_N orbifold model
s\, but only the wavefunctions of Z_N-invariant zero-modes receive the blo
w-up effects around fixed points of T^2/Z_N orbifolds. Such blowup effects
change the selection rules and Yukawa couplings among the chiral zero-mod
es as well as the modular symmetry\, in contrast to those on the magnetize
d T^2/Z_N orbifold models. We also discuss the matter wavefunctions on res
olutions of K3 orbifolds.\n\nhttps://conference-indico.kek.jp/event/80/con
tributions/1553/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1553/
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:20200403T200218Z
UID:indico-contribution-80-1552@conference-indico.kek.jp
DESCRIPTION:Speakers: Naoto Kan ()\nWhen one of the space-time dimension i
s compactified on the circle\, the QCD exhibits the chiral phase transitio
n at some critical radius. When we further turn on a background theta term
which depends on the compactified coordinate\, a topological ordered phas
e appears at low energy via the winding of the theta. We discuss what kind
of theories can describe the physics near the critical point by requiring
the matching of topological field theories in the infrared. As one of the
possibilities\, we propose a scenario where the rho and omega mesons form
a U(Nf) gauge theory near the critical point. In the phase where the chir
al symmetry is restored\, they become the dual gauge boson of the gluon re
lated by the level-rank duality between the three dimensional gauge theori
es.\n\nhttps://conference-indico.kek.jp/event/80/contributions/1552/
LOCATION:KEK In front of Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1552/
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:20200403T200218Z
UID:indico-contribution-80-1551@conference-indico.kek.jp
DESCRIPTION:Speakers: Yun-Long Zhang ()\nWe study a model of two scalar fi
elds with a hyperbolic field space and show that it reduces to a single-fi
eld Dirac-Born-Infeld (DBI) model in the limit where the field space becom
es infinitely curved. We apply the de Sitter swampland conjecture to the t
wo-field model and take the same limit. It is shown that in the limit\, al
l quantities appearing in the swampland conjecture remain well-defined wit
hin the single-field DBI model. Based on a consistency argument\, we then
speculate that the condition derived in this way can be considered as 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) the
ories with more general scalar field. [arXiv: 1905.10950]\n\nhttps://confe
rence-indico.kek.jp/event/80/contributions/1551/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1551/
END:VEVENT
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:20200403T200218Z
UID:indico-contribution-80-1550@conference-indico.kek.jp
DESCRIPTION:Speakers: Gerald Dunne ()\nThere are several important concept
ual and computational questions concerning the Minkowski space path integr
al\, which have recently been approached from a new perspective motivated
by "resurgent asymptotics"\, which is a novel mathematical formalism that
seeks to unify perturbative and non-perturbative physics. In this general
talk\, I will introduce the \nbasic ideas\, report on some examples in qua
ntum mechanics and quantum field theory\, and discuss future prospects.\n\
nhttps://conference-indico.kek.jp/event/80/contributions/1550/
LOCATION:KEK Kobayashi Hall\, Kenkyu-Honkan bldg. 1F
URL:https://conference-indico.kek.jp/event/80/contributions/1550/
END:VEVENT
END:VCALENDAR