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VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:On the emergence of (3+1)-dimensional expanding space-time in the
Lorentzian type IIB matrix model (I)
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-30@cern.ch
DESCRIPTION:Speakers: Mr. AOKI\, Toshihiro (SOKENDAI)\nThe type IIB matrix
model was proposed as a non-perturbative formulation of superstring theor
y in 1997. The emergence of (3+1)-dimensional space-time was observed in M
onte Carlo studies of its Lorentzian version. This implies that an expandi
ng (3+1)-dimensional space-time naturally appears from (9+1)-dimensional s
pace-time\, in which superstring theory is defined. The expanding behavior
was studied by simulating simplified versions of the model\, which sugges
ted that the expansion is exponential at the beginning\, and it turns into
a power law at later times. This property is reminiscent of the inflation
and the FRW universe\, respectively. In this work we investigate the spac
e-time structure of the matrix configurations obtained in the simulation\,
and find that the expanding 3d space is described essentially by the Paul
i \nmatrices. We attribute this problem to an approximation\, which is use
d\nto avoid the sign problem in Monte Carlo simulation\, and discuss the\n
possibility of obtaining a regular space-time if we investigate the\norigi
nal model without such an approximation.\n\nhttps://conference-indico.kek.
jp:443/indico/event/48/session/13/contribution/30
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/30
END:VEVENT
BEGIN:VEVENT
SUMMARY:On the emergence of (3+1)-dimensional expanding space-time in the
Lorentzian type IIB matrix model (II)
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-36@cern.ch
DESCRIPTION:Speakers: Mr. HIRASAWA\, Mitsuaki (SOKENDAI)\nThe type IIB mat
rix model has been studied as a non-perturbative formulation of superstrin
g theory. In particular\, by Monte Carlo simulation of the Lorentzian type
IIB matrix model\, (3+1)-dimensional expanding space-time was shown to em
erge dynamically. Moreover\, from simulations of simplified models\, it wa
s suggested that the expansion of space is exponential at early times and
it turns into a power-law at later times. This behavior is reminiscent of
the inflation and the FRW universe in the radiation dominant era\, respect
ively. In this work we investigate the space-time structure of the matri
x configurations generated by the simulation and find that the 3-dimension
al space is essentially described by the Pauli matrices. We attribute this
problem to the approximation used to avoid the sign problem in Monte Carl
o simulation and discuss the possibility that a regular 3-dimensional spac
e emerges if we simulate the model without such an approximation.\n\nhttps
://conference-indico.kek.jp:443/indico/event/48/session/13/contribution/36
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/36
END:VEVENT
BEGIN:VEVENT
SUMMARY:Europium Oxide (EO) Phosphor: Study its behavior for Thermal Neutr
on Detector
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-31@cern.ch
DESCRIPTION:Speakers: Dr. BHADANE\, Mahesh Sakharam (DEPARTMENT OF PHYSICS
\, SPPU)\nNeutron detectors are vital devices used in various fields like
nuclear power\, nuclear medicine\, particle physics\, etc. In the present
work\, pure europium oxide (Eu2O3) shows the remarkable results for therma
l neutron detection. The natural thermal neutron source Cf-252 having flux
106 n/sec/cm2 was used for irradiation of Eu2O3 samples. All the thermal
neutron fluences were measured in ex-situ time [1-3]. For the structural c
onfirmation\, the samples were characterized by using XRD and from the dat
a it was observed that the intensity of the characteristics peaks decrease
d with the increase in the neutron fluence. Moreover\, thermal neutron dos
imetric characteristics of the present phosphor\, such as thermoluminescen
ce glow curve\, TL dose–response\, fading\, repeatability have been stud
ied. This phosphor powder represents a deeper level dosimetric trap\, whic
h provides the TL glow peak around 303 oC. The TL response of Eu2O3 phosph
or as a function of thermal neutron fluence is observed to be very linear
up to the fluence of 1.55 X 1011 n/cm2 and then saturates with further inc
rease in the fluence. In addition\, the TL glow curves were deconvoluted b
y glow curve deconvolution (GCD) method and corresponding trapping paramet
ers have been determined. It has been found that for every deconvoluted pe
ak there is a specific level of energy trapping. The europium oxide phosph
or has been used effectively for the neutron dosimetric application.\n\nht
tps://conference-indico.kek.jp:443/indico/event/48/session/13/contribution
/31
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/31
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetric Born-Infeld Equations in Diverse Dimensions from Pu
re Spinor Superstring
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-32@cern.ch
DESCRIPTION:Speakers: Mr. HANAZAWA\, Sota (Ibaraki University)\nBerkovits
and Pershin have shown that in a general background\, the ten-dimensional
Born-Infeld equations of motion for the background fields are extracted fr
om BRS charge conservation in an open pure spinor superstring. We improve
their result to include even contribution of Dirichlet boundary conditions
for the open superstring. It is expected that the resulting abelian Born-
Infeld equations contain additional higher-derivative correction in the BI
field strength and have manifest supersymmetry on D-brane world-volumes.\
n\nhttps://conference-indico.kek.jp:443/indico/event/48/session/13/contrib
ution/32
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/32
END:VEVENT
BEGIN:VEVENT
SUMMARY:Emergence of chiral zero modes in the IIB matrix model
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-33@cern.ch
DESCRIPTION:Speakers: Mr. HATAKEYAMA\, Kohta (Shizuoka University)\nWe num
erically investigate whether chiral zero modes appear in the IIB matrix mo
del\, which is known as one of non-perturbative formulations of superstrin
g theory. We examine the spectrum of the 6-dimensional Dirac operator for
classical solutions of the IIB matrix model\, and we find that there exist
non-trivial zero modes and the corresponding wave functions are localized
. We discuss that these zero modes originate from geometry of the extra di
mensions.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/session/
13/contribution/33
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/33
END:VEVENT
BEGIN:VEVENT
SUMMARY:Complex poles and spectral functions of Yang-Mills theory
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-34@cern.ch
DESCRIPTION:Speakers: Ms. HAYASHI\, Yui (Chiba University)\nWe derive a re
lation between the number of complex poles of a propagator and some behavi
or of the spectral function assuming the behavior of the propagator in the
neighborhood of the origin and the asymptotically large region in the com
plex momentum plane. We apply this relation to the mass-deformed Yang-Mill
s model\, which is identified with a low-energy effective theory of the Ya
ng-Mills theory\, to show within one-loop quantum corrections that the glu
on propagator has a pair of complex conjugate poles or tachyonic poles of
multiplicity two\, while the ghost propagator has at most one tachyonic po
le. Moreover\, we discuss the implications of these results for gluon conf
inement.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/session/1
3/contribution/34
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/34
END:VEVENT
BEGIN:VEVENT
SUMMARY:Inflationary cosmology via quantum corrections in M-theory
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-35@cern.ch
DESCRIPTION:Speakers: Mr. HIRAGA\, Kazuho (Ibaraki University)\nInflation
is a promising scenario of the early Universe and it can explain cosmologi
cal observations of CMB. Although there are a lot of models for the inflat
ion\, recently it is possible to restrict them by comparing cosmological p
arameters with the observations. We investigate inflationary cosmology by
solving the effective action of the M-theory\, which consists of the 11 di
mensional supergravity with quartic terms of the Weyl tensor. We also disc
uss perturbation around the background metric to compare the cosmological
parameter.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/session
/13/contribution/35
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/35
END:VEVENT
BEGIN:VEVENT
SUMMARY:Creation of D9-brane--anti-D9-brane Pairs in Time Dependent Backgr
ound
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-37@cern.ch
DESCRIPTION:Speakers: Dr. HOTTA\, Kenji (Hokkaido University)\nRecently\,
we have investitated Unruh effect for closed strings and for open strings
on D9-brane--anti-D9-brane pairs\, and discuss the creation of D9-brane--a
nti-D9-brane pairs for highly accelerated observers. In this talk\, we con
sider a simple time dependent background\, in which the spacetime becomes
Minkowski spacetime in the far past and future\, and investigate the Hawki
ng-Unruh effect of open strings on D9-brane--anti-D9-brane pairs. Then we
discuss the creation of D9-brane--anti-D9-brane pairs in the far future.\n
\nhttps://conference-indico.kek.jp:443/indico/event/48/session/13/contribu
tion/37
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/37
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wavefunction localization on S^2 with flux and branes
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-38@cern.ch
DESCRIPTION:Speakers: Mr. IMAI\, Sosuke (Waseda University)\nLocalized Kal
uza-Klein zero-mode wavefunctions are desired for extra dimensional models
to explain the Yukawa hierarchy of the Standard Model of particle physics
. This is why the magnetized S^2\, which wavefunctions on are not localize
d\, are phenomenologically unfavorable as extra dimensions.\nIn this work\
, we revisit S^2 with introducing 3-branes in addition to magnetic flux. W
e derive wavefunctions analytically and show that they are enough localize
d for the Yukawa hierarchy due to branes.\n\nhttps://conference-indico.kek
.jp:443/indico/event/48/session/13/contribution/38
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/38
END:VEVENT
BEGIN:VEVENT
SUMMARY:Momentum space approach to crossing symmetric CFT correlators
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-39@cern.ch
DESCRIPTION:Speakers: Dr. ISONO\, Hiroshi (Chulalongkorn University)\nWe c
onstruct a crossing symmetric basis for conformal four-point functions in
momentum space by requiring consistent factorization. Just as scattering a
mplitudes factorize when the intermediate particle is on-shell\, non-analy
tic parts of conformal correlators enjoy a similar factorization in moment
um space. Based on this property\, Polyakov\, in his pioneering 1974 work\
, introduced a basis for conformal correlators which manifestly satisfies
the crossing symmetry. He then initiated the bootstrap program by requirin
g its consistency with the operator product expansion. This approach is co
mplementary to the ordinary bootstrap program\, which is based on the conf
ormal block and requires the crossing symmetry as a consistency condition
of the theory. Even though Polyakov's original bootstrap approach has been
revisited recently\, the crossing symmetric basis has not been constructe
d explicitly in momentum space. In this poster talk we show the complete t
he construction of the crossing symmetric basis for scalar four-point func
tions with an intermediate operator with a general spin\, by using new ana
lytic expressions for three-point functions involving one tensor. Our new
basis manifests the analytic properties of conformal correlators. Also the
connected and disconnected correlators are manifestly separated\, so that
it will be useful for the study of large N CFTs in particular.\n\nhttps:/
/conference-indico.kek.jp:443/indico/event/48/session/13/contribution/39
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/39
END:VEVENT
BEGIN:VEVENT
SUMMARY:Localization of gauge fileds on brane via higgs mechanism
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-40@cern.ch
DESCRIPTION:Speakers: KAWAGUCHI\, Masaki (Yamagata University)\nWe study a
localization mechanism of gauge fields on a 3-brane in Yang-Mills-Higgs m
odels with a modified kinetic term of gauge fields in non-compact extra di
mensions (D>4). The localization mechanism is carried out when the Higgs f
ield locally condenses on the 3-brane. Hence\, the Higgs mechanism yields\
, in addition to two conventional roles (spontaneous symmetry breaking of
the gauge symmetry and generating mass for chiral fermions)\, a new impo
rtant consequence\, namely\, localization of the gauge fields on a 3-brane
. The lightest localized gauge field is massless (massive) if the Higgs fi
eld is neutral (charged) to the gauge field.\n\nhttps://conference-indico.
kek.jp:443/indico/event/48/session/13/contribution/40
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/40
END:VEVENT
BEGIN:VEVENT
SUMMARY:Geometry of the 2-loop MHV amplituhedron
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-41@cern.ch
DESCRIPTION:Speakers: Mr. KOJIMA\, Ryota (KEK)\nNima arkani-Hamed and Jaro
slav trnka found a new mathematical object\, "the Amplituhedron" that its
'volume' is the amplitude in planar N=4 SYM.\nWe found a new explicit form
ula for the n-pt 2-loop MHV amplitude from the amplituhedron and obtain so
me properties of the amplitude from this result. In this talk\, I will bri
efly explain the definition of the amplituhedron and our results about a g
eometry of the 2-loop amplituhedron.\n\nhttps://conference-indico.kek.jp:4
43/indico/event/48/session/13/contribution/41
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/41
END:VEVENT
BEGIN:VEVENT
SUMMARY:Symmetry Breaking in Quantum Curves and Super Chern-Simons Matrix
Models
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-42@cern.ch
DESCRIPTION:Speakers: Mr. KUBO\, Naotaka (Yukawa Institute for Theoretical
Physics)\nIt was known that quantum curves and super Chern-Simons matrix
models correspond to each other. From the viewpoint of symmetry\, the alge
braic curve of genus one\, called the del Pezzo geometry\, enjoys symmetri
es of the exceptional algebra\, while the super Chern-Simons matrix model
is described by the free energy of topological strings on the del Pezzo ba
ckground with the symmetry broken. We study the symmetry breaking of the q
uantum cousin of the algebraic curve and find that the symmetry breaking r
eproduces the results in the super Chern-Simons matrix models.\n\nhttps://
conference-indico.kek.jp:443/indico/event/48/session/13/contribution/42
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/42
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universal Structure of Covariant Holographic Two-Point Functions I
n Massless Higher-Order Gravities
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-43@cern.ch
DESCRIPTION:Speakers: Mr. MAI\, Zhan-Feng (Tianjin University)\nWe derive\
nthe covariant holographic two-point functions and find that they have a u
niversal structure.\nIn particular\, the theory-dependent overall coeffici
ent C_{T} can be universally expressed by\n(d − 1)C_{T} = ℓ(∂a/∂
ℓ)\, where a is the holographic a-charge. We verify this relation in qua
sitopological\nRicci polynomial\, Einstein-Gauss-Bonnet\, Einstein-Loveloc
k and Einstein cubic\ngravities.\n\nhttps://conference-indico.kek.jp:443/i
ndico/event/48/session/13/contribution/43
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/43
END:VEVENT
BEGIN:VEVENT
SUMMARY:Diffeomorphism for fuzzy spaces
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-44@cern.ch
DESCRIPTION:Speakers: Dr. MATSUMOTO\, Takashi (University of Tsukuba)\nFuz
zy spaces are known as a typical example of noncommutative geometry and ex
pected to describe the fundamental structure of space-time. However\, the
mechanism to describe gravity in the framework of fuzzy spaces remains to
be completely elucidated. In order to understand the mechanism\, we focus
on the notion of diffeomorphisms\, which plays a key role in the classical
theory of gravity. In this talk\, we propose a formulation of the diffeom
orphisms for fuzzy spaces in terms of the Berezin-Toeplitz quantization ma
p\, which is introduced in the context of geometric quantization. We apply
this formulation to 2-sphere as an example and obtain new matrix configur
ations that are diffeomorphic to the standard fuzzy sphere given by the ge
nerators of SU(2) Lie algebra.\n\nhttps://conference-indico.kek.jp:443/ind
ico/event/48/session/13/contribution/44
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/44
END:VEVENT
BEGIN:VEVENT
SUMMARY:Numerical study of the $\\mathcal{N}=2$ Landau--Ginzburg model
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-45@cern.ch
DESCRIPTION:Speakers: Mr. MORIKAWA\, Okuto (Kyushu University)\nIt is beli
eved that the two-dimensional massless $\\mathcal{N}=2$ Wess--Zumino model
becomes the $\\mathcal{N}=2$ SCFT in the IR limit. We examine this theore
tical conjecture of the Landau--Ginzburg (LG) description of the $\\mathca
l{N}=2$ SCFT by numerical simulations on the basis of a supersymmetric-inv
ariant momentum-cutoff regularization. We study one or two supermultiplets
with various superpotentials. From a two-point correlation function in th
e IR region\, we measure the central charge\, which is consistent with the
conjectured LG description of the ADE minimal models. Our result supports
the theoretical conjecture and\, at the same time\, indicates a possible
computational method of correlation functions in the $\\mathcal{N}=2$ SCFT
from the LG description.\n\nhttps://conference-indico.kek.jp:443/indico/e
vent/48/session/13/contribution/45
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/45
END:VEVENT
BEGIN:VEVENT
SUMMARY:An analysis for excited baryons based on gauge/gravity corresponde
nce
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-46@cern.ch
DESCRIPTION:Speakers: Mr. OGINO\, Takahiro (Nagoya University)\nWe attempt
to describe baryons based on gauge/gravity correspondence. In particular\
, we focus on baryon excited states and employ D4/D8-brane model\, which i
s not still investigated in detail from this point of view. First\, we tak
e the limit where the effect of the curved background is negligible and th
en study the spectrum of strings in the flat spacetime. After that we atte
mpt to incorporate perturbatively the effect of the curved background\, RR
flux and interactions between open strings appearing in our system which
should be seen as baryons.\n\nhttps://conference-indico.kek.jp:443/indico/
event/48/session/13/contribution/46
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/46
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chaos of interquark force via holography
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-47@cern.ch
DESCRIPTION:Speakers: Mr. OTA\, Toshihiro (Osaka university)\nAdS/CFT corr
espondence tells us that the energy of an open string hanging on the bound
ary of a curved spacetime is equivalent to the Wilson loop in the gauge th
eory side. In general\, the motion of a string in a curved background show
s chaotic behavior. Then\, how is the chaos seen in observables in a QFT?
We study the dynamics of an open string in the D4-soliton geometry which c
orresponds to a pure Yang-Mills theory and find it is chaotic. This means
that the interquark force in 4d large Nc QCD is chaotic\, and we evaluate
the Lyapunov exponent.\n\nhttps://conference-indico.kek.jp:443/indico/even
t/48/session/13/contribution/47
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/47
END:VEVENT
BEGIN:VEVENT
SUMMARY:A gauge-invariant regularization of chiral gauge theory
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-48@cern.ch
DESCRIPTION:Speakers: Mr. SAKAI\, Katsuta (Kyoto University)\nWe propose a
novel gauge-invariant regularization for the perturbative chiral gauge th
eory. We describe a chiral fermion as the massless mode of the domain-wall
fermion. There we can regularize both the parity-odd and even part of the
fermion loops by introducing the Pauli-Villars regulators. On the other h
and\, loops involving the gauge field are regularized by applying the dime
nsional regularization only to the gauge field. We show that the formulati
on requires gauge-invariant counter terms only when the theory is gauge-an
omaly free\, and that the fermion number anomaly is correctly reproduced.\
n\nhttps://conference-indico.kek.jp:443/indico/event/48/session/13/contrib
ution/48
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/48
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological string geometry theory
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-49@cern.ch
DESCRIPTION:Speakers: Prof. SATO\, Matsuo (Hirosaki University)\nPerturbat
ive string amplitudes are correctly derived from the string geometry theor
y\, which is one of the candidates of a non-perturbative formulation of st
ring theory. In order to derive non-perturbative effects rather easily fro
m the theory\, we formulate topological string geometry theory\, which is
obtained by restricting the string geometry theory to its topological sect
or. Because string geometry is described by a superfield formalism\, we fi
rst describe the topological string theory in a superfield formalism. By c
onstructing a string geometry based on this superfield formalism\, we form
ulate the topological string geometry theory. We derive the perturbative p
artition function of the topological string theory from fluctuations aroun
d a classical solution in the topological string geometry theory. We will
discuss how to derive non-perturbative corrections on the partition functi
on by using the localization techniques.\n\nhttps://conference-indico.kek.
jp:443/indico/event/48/session/13/contribution/49
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/49
END:VEVENT
BEGIN:VEVENT
SUMMARY:Worldsheet Instanton Corrections to Five-branes and Waves in Doubl
e Field Theory
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-51@cern.ch
DESCRIPTION:Speakers: Mr. SHIOZAWA\, Kenta (Kitasato University)\nWe make
a comprehensive study on the string winding corrections to supergravity so
lutions in double field theory (DFT). We find five-brane and wave solution
s of diverse codimensions in which the winding coordinates are naturally i
ncluded. We discuss a physical interpretation of the winding coordinate de
pendence. The analysis based on the geometric structures behind the soluti
ons leads to an interpretation of the winding dependence as string worldsh
eet instanton corrections. We also give a brief discussion on the origins
of these winding corrections in gauged linear sigma model. Our analysis re
veals that for every supergravity solution\, one has DFT solutions that in
clude string winding corrections. This presentation is based on JHEP07(201
8)001.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/session/13/
contribution/51
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/51
END:VEVENT
BEGIN:VEVENT
SUMMARY:Black hole entropy\, T-duality and high-derivative gravity theorie
s
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-52@cern.ch
DESCRIPTION:Speakers: Dr. SIERRA-GARCIA\, J. Anibal (Chulalongkorn Univers
ity)\nI consider a two-parameter family of higher-derivative gravitational
actions exhibiting T-duality. Some values of the parameters correspond to
string theory effective actions\, but most of them do not. For all cases\
, I will show black hole entropy and temperature to be invariant under T-d
uality. As an explicit example\, BTZ black hole and its T-dual black strin
g are presented.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/s
ession/13/contribution/52
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/52
END:VEVENT
BEGIN:VEVENT
SUMMARY:Resurgence like method and higher corrections of bounce calculatio
n
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-53@cern.ch
DESCRIPTION:Speakers: Mr. SUEISHI\, Naohisa (Nagoya University)\nResurgenc
e is a method to connect perturbative series with nonperturbative effect v
ia Stokes phenomenon. In resurgence\, Borel ambiguity should be cancelled
but in bounce calculation\, which shows the path integral itself has ambig
uity\, as a result we can the Borel ambiguity regarded as the bounce contr
ibution itself.\n With this relation\, I calculated higher corrections of
bounce contribution from the perturbative series and check it with the beh
aviour of the wave function.\n\nhttps://conference-indico.kek.jp:443/indic
o/event/48/session/13/contribution/53
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/53
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hermitian matrix model with cusp potential
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-54@cern.ch
DESCRIPTION:Speakers: Mr. SUGIYAMA\, Kento (Shizuoka University)\nIn this
poster\, we investigate zero and one dimensional Hermitian matrix models w
ith cusp potentials at large N. We show that large N phase transitions in
these models are quite different from the third order phase transitions in
the ordinary polynomial potential cases. Particularly the zero dimensiona
l matrix models exhibit unexpected behaviors.\n\nhttps://conference-indico
.kek.jp:443/indico/event/48/session/13/contribution/54
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/54
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conformal three-point functions in momentum space
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-55@cern.ch
DESCRIPTION:Speakers: Mr. TAKEUCHI\, Toshiaki (Kobe University)\nWe constr
uct three-point functions with spinning operators in momentum space by exp
licitly solving the conformal Ward-Takahashi identities. In particular we
demonstrate that they can be obtained by acting some differential operator
s on scalar three-point functions. We expect that our results are useful\,
e.g.\, for the Polyakov type bootstrap approach and study of cosmological
correlation functions. This work is in collaboration with Hiroshi Isono a
nd Toshifumi Noumi.\n\nhttps://conference-indico.kek.jp:443/indico/event/4
8/session/13/contribution/55
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/55
END:VEVENT
BEGIN:VEVENT
SUMMARY:Extended quantum mechanical supersymmetry with central charges in
higher dimensional Dirac field
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-56@cern.ch
DESCRIPTION:Speakers: Mr. UEBA\, Inori (Kobe University)\nWe have found th
at the N-extended quantum mechanical supersymmetry with central charges is
hidden in the 4D mass spectrum of higher dimensional Dirac field. The sup
ercharges tell us a relationship among the Kaluza-klain (KK) mode function
s with degenerate 4D mass eigenvalues due to the degrees of freedom of the
higher dimensional spinor. Furthermore\, we focus on the BPS states which
form the short multiplets.\n\nhttps://conference-indico.kek.jp:443/indico
/event/48/session/13/contribution/56
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/56
END:VEVENT
BEGIN:VEVENT
SUMMARY:Liouville Irregular States and Argyres-Douglas theories
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-57@cern.ch
DESCRIPTION:Speakers: Mr. UETOKO\, Takahiro (Ritsumeikan University)\nWe s
tudy the Liouville irregular states proposed by Gaiotto and Teschner\, and
evaluate irregular conformal blocks corresponding to the Nekrasov partiti
on functions of the (A1\,D4) and (A1\,A3) Algyres-Douglas theories. The sa
lient feature of this calculation is that we discuss the Q-dependence of N
ekrasov partition function in the 2d-4d relation. Q is the Liouville charg
e and corresponds to a parameter of the Omega background. Then we find tha
t the Q-dependence of parameters are consistent with the flavor symmetry.
Moreover\, we discuss a generalization to rank-n irregular state. [Based o
n a collaboration with Takahiro Nishinaka]\n\nhttps://conference-indico.ke
k.jp:443/indico/event/48/session/13/contribution/57
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/57
END:VEVENT
BEGIN:VEVENT
SUMMARY:Appearance of chiral exact zero modes from classical solutions of
type IIB matrix model
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-58@cern.ch
DESCRIPTION:Speakers: Mr. YOSPRAKOB\, Atis (KEK/SOKENDAI)\nWe discuss some
classical solutions of type IIB matrix model that generate chiral fermion
s\, which is essential for realizing the Standard Model. In particular\, w
e consider solutions constructed from representations of special unitary g
roups' generators. Fermion wave functions can then be generated as eigenve
ctors of the associated matrix Dirac operator. It is found that many solut
ions give large number of exact zero modes. However\, only zero modes that
are localized can be interpreted as fermions at brane intersections. We c
an optimize the localization by mixing these zero modes together. Finally\
, we report some solutions and number of the associated localized chiral z
ero modes.\n\nhttps://conference-indico.kek.jp:443/indico/event/48/session
/13/contribution/58
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/58
END:VEVENT
BEGIN:VEVENT
SUMMARY:The correlation functions of exactly marginal operator from AdS/CF
T
DTSTART;VALUE=DATE-TIME:20181219T060000Z
DTEND;VALUE=DATE-TIME:20181219T090000Z
DTSTAMP;VALUE=DATE-TIME:20190620T043000Z
UID:indico-contribution-13-0-59@cern.ch
DESCRIPTION:Speakers: Mr. ZENKAI\, Masashi (Nagoya University)\nIn the con
formal field theory(CFT)\, there is a deformation of theory that does not
change the original CFT’s symmetry\, so called Exactly Marginal Deformat
ion. The generator of this deformation is exactly marginal operator(EMO).
\n The motivation of our study is to check the properties of exactly margi
nal operator with using AdS/CFT correspondence. The properties are the cor
relation functions of EMO is allowed to be contact term only.\n From the c
alculation in Anti-de Sitter space\, we checked this property by 4-point f
unction by perturbative way. \n We are trying to analyze higher point fun
ctions and to find new aspects to CFT with strong coupling.\n\nhttps://con
ference-indico.kek.jp:443/indico/event/48/session/13/contribution/59
LOCATION:Kenkyu-Honkan bldg. 1F Kobayashi Hall
URL:https://conference-indico.kek.jp:443/indico/event/48/session/13/contri
bution/59
END:VEVENT
END:VCALENDAR