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BEGIN:VEVENT
SUMMARY:Charged spinning operators in the O(2) model
DTSTART;VALUE=DATE-TIME:20210830T133000Z
DTEND;VALUE=DATE-TIME:20210830T143000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5962@indico.ipmu.jp
DESCRIPTION:Speakers: Gabriel Cuomo (SCGP/YITP Stony Brook )\nLarge charge
operators in CFTs invariant under internal symmetry can be generically as
sociated with a superfluid phase of the theory. Therefore their correlatio
n functions can be computed systematically within the effective field theo
ry for the superfluid Goldstone mode. Focusing on the critical O(2) model
in three dimensions\, I will review this construction and extend it to inc
lude also operators with both large charge and large spin. I will discuss
the results for the scaling dimension of the lightest charged operator\, d
escribing the transition from the superfluid phase to the large spin multi
-trace operator regime described by the bootstrap. Based on 1711.02108 wit
h A. de la Fuente\, A. Monin\, D. Pirtskhalava\, R. Rattazzi and on a work
in progress with Z.Komargodski.\n\nhttps://indico.ipmu.jp/event/321/contr
ibutions/5962/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5962/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Large charge and higher rank N=2 SCFTs
DTSTART;VALUE=DATE-TIME:20210831T123000Z
DTEND;VALUE=DATE-TIME:20210831T133000Z
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UID:indico-contribution-321-5964@indico.ipmu.jp
DESCRIPTION:Speakers: Philip Argyres (University of Cincinnati)\nhttps://i
ndico.ipmu.jp/event/321/contributions/5964/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5964/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bulk-boundary correspondence of topologically trivial insulators
DTSTART;VALUE=DATE-TIME:20210902T120000Z
DTEND;VALUE=DATE-TIME:20210902T130000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5963@indico.ipmu.jp
DESCRIPTION:Speakers: Haruki Watanabe (The University of Tokyo)\nTopologic
al insulators are materials in which the bulk part is insulating but the s
urface is metallic because of protected gapless states on the surface. The
correspondence between the bulk topology and the gapless surface states i
s called the bulk-boundary correspondence. Recently\, higher-order topolog
ical insulators with gapless states localizes at hinges and corners of a c
rystal\, rather than at surfaces\, have been actively studied.\n\nOn the o
ther hand\, it has been found that even topologically trivial insulators m
ay also exhibit a kind of bulk-boundary correspondence. These materials ar
e characterized by electric multipole moments in the bulk and feature frac
tionally quantized electric charges at hinges and corners of a crystal. In
this talk\, I will review these recent developments and show that\, in fa
ct\, a crystal of sodium chloride (NaCl) is the simplest example of octupo
le insulators which have 1/8 of the elementary charge e at corners.\n\nRef
: HW and Hoi Chun Po\, arXiv:2009.04845\n\nhttps://indico.ipmu.jp/event/32
1/contributions/5963/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5963/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Solving (Q)FTs via CFTs: From Weak Gravity Conjecture to Pandemics
DTSTART;VALUE=DATE-TIME:20210901T133000Z
DTEND;VALUE=DATE-TIME:20210901T143000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5961@indico.ipmu.jp
DESCRIPTION:Speakers: Francesco Sannino (Federico II University\, Napoli a
nd University of Southern Denmark)\nhttps://indico.ipmu.jp/event/321/contr
ibutions/5961/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5961/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conformal Dimensions in the Subleading Large Charge Sector of the
O(4) model
DTSTART;VALUE=DATE-TIME:20210830T143000Z
DTEND;VALUE=DATE-TIME:20210830T153000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5960@indico.ipmu.jp
DESCRIPTION:Speakers: Shailesh Chandrasekharan (Duke University)\nhttps://
indico.ipmu.jp/event/321/contributions/5960/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5960/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Regge trajectories for N=(2\,0) superconformal field theories
DTSTART;VALUE=DATE-TIME:20210903T143000Z
DTEND;VALUE=DATE-TIME:20210903T153000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5959@indico.ipmu.jp
DESCRIPTION:Speakers: Madalena Lemos (Durham University)\nWe discuss the s
tructure of Regge trajectories of 6d N=(2\,0) SCFTs combining analyticity
in spin with supersymmetry. Focusing on the four-point function of supermu
ltiplet we show how "analyticity in spin" holds for all spins greater than
-3. Through the Lorentzian inversion formula we then describe an iterativ
e procedure to "bootstrap" this four-point function starting from protecte
d data\, and compare the results with the numerical bootstrap bounds. This
procedure works best at large but finite central charge\, where non-prote
cted contributions are suppressed by the inversion formula.\n\nhttps://ind
ico.ipmu.jp/event/321/contributions/5959/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5959/
END:VEVENT
BEGIN:VEVENT
SUMMARY:BCFT at Large Charge
DTSTART;VALUE=DATE-TIME:20210831T133000Z
DTEND;VALUE=DATE-TIME:20210831T143000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5958@indico.ipmu.jp
DESCRIPTION:Speakers: Mark Mezei (Simons Center for Geometry and Physics\,
Stony Brook)\nWe compute the spectrum of large charge operators in bounda
ry conformal field theories (BCFTs) using the superfluid effective field t
heory (EFT). We verify the EFT predictions in weakly coupled examples\, wh
ere computations can be done in the microscopic description. We end with a
discussion of large charge phases of bulk and boundary CFTs beyond the su
perfluid paradigm. The talk is based on work with G. Cuomo and A. Raviv-Mo
she.\n\nhttps://indico.ipmu.jp/event/321/contributions/5958/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5958/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Convexity of Charged Operators in CFTs and the Weak Gravity Conjec
ture
DTSTART;VALUE=DATE-TIME:20210901T143000Z
DTEND;VALUE=DATE-TIME:20210901T153000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5957@indico.ipmu.jp
DESCRIPTION:Speakers: Eran Palti (Ben Gurion University)\nIn this talk I w
ill introduce a particular formulation of the Weak Gravity Conjecture in A
dS space in terms of the self-binding energy of a particle. The holographi
c CFT dual of this formulation corresponds to a certain convex-like struct
ure for operators charged under continuous global symmetries. Motivated by
this\, we proposed a conjecture that this convexity is a general property
of all CFTs\, not just those with weakly-curved gravitational duals. Whil
e we lack an understanding of why this may be true from the CFT side\, it
is possible to test it in simple CFTs. The conjecture passes all the tests
performed so far.\n\nhttps://indico.ipmu.jp/event/321/contributions/5957/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5957/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thermal one-point functions and single-valued polylogarithms: a sp
urious remark or something deeper?
DTSTART;VALUE=DATE-TIME:20210902T143000Z
DTEND;VALUE=DATE-TIME:20210902T153000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5956@indico.ipmu.jp
DESCRIPTION:Speakers: Anastasios Petkou (University of Thessaloniki)\nI pr
esent an overview on some recent progress in thermal one-point function in
CFTs for general odd dimensions. On the one hand\, they can be calculated
using an extension to finite temperature of analytic bootstrap techniques
. On the other hand\, they are associated to single-valued polylogarithms
which represent multiloop amplitudes in gauge theories. Some possible impl
ications of the latter observation will be discussed.\n\nhttps://indico.ip
mu.jp/event/321/contributions/5956/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5956/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The large charge sector of 3d parity-violating CFTs
DTSTART;VALUE=DATE-TIME:20210903T153000Z
DTEND;VALUE=DATE-TIME:20210903T160000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5955@indico.ipmu.jp
DESCRIPTION:Speakers: Umang Mehta (Kadanoff Center for Theoretical Physics
\, University of Chicago)\nFor CFTs that become superfluids at finite dens
ity\, we show that there exists a single one-derivative term in the Goldst
one EFT that has a quantized coefficient. This term requires the ground st
ate on a sphere to have vortices\, and results in a spectrum of operators
that is remarkably different from CFTs that are parity invariant. We will
show how the properties predicted by the Goldstone EFT are realized in the
spectrum of monopole operators in a weakly coupled Chern-Simons matter th
eory. Based on arxiv:2102.05046 with Luca Delacretaz and Gabriel Cuomo.\n\
nhttps://indico.ipmu.jp/event/321/contributions/5955/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5955/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Operator spectrum of nonrelativistic CFTs at large charge
DTSTART;VALUE=DATE-TIME:20210830T153000Z
DTEND;VALUE=DATE-TIME:20210830T160000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5954@indico.ipmu.jp
DESCRIPTION:Speakers: Vito Pellizzani (University of Bern)\nI will discuss
the large-charge expansion of the conformal dimension Δ_Q of the lowest
operator of charge Q in nonrelativistic CFTs using the state-operator corr
espondence. The latter requires coupling the theory to an external harmoni
c trap that confines the particles to a spherical cloud\, at the edge of w
hich the effective theory breaks down and leads to divergences. Only recen
tly has this issue been overcome by constructing appropriate counterterms
at the edge of the cloud. I will show how to extend these results by syste
matically analyzing the degree of divergence of operators in the effective
action and show that there always exist appropriate edge counterterms tha
t make the final contributions to Δ_Q finite. On the other side of the co
rrespondence\, this also provides new corrections to the Thomas-Fermi appr
oximation of the unitary Fermi gas\, and I will comment on their relevance
for ultracold atom physics.\n\nhttps://indico.ipmu.jp/event/321/contribut
ions/5954/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5954/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Transition of Large R-Charge Operators on a Conformal Manifold
DTSTART;VALUE=DATE-TIME:20210831T153000Z
DTEND;VALUE=DATE-TIME:20210831T160000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5953@indico.ipmu.jp
DESCRIPTION:Speakers: Adar Sharon (Weizmann Institute of Science)\nWe stud
y a 3d N=2 supersymmetric conformal manifold using the large-charge expans
ion. The exactly marginal operator is shown to continuously interpolate be
tween the "free" phase and the "superfluid" phase in the large-charge limi
t. We also discuss some novel aspects of the large-charge limit which appe
ar in this model.\n\nhttps://indico.ipmu.jp/event/321/contributions/5953/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5953/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The O(N) model at large charge and the quartic/cubic equivalence
DTSTART;VALUE=DATE-TIME:20210901T153000Z
DTEND;VALUE=DATE-TIME:20210901T160000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5952@indico.ipmu.jp
DESCRIPTION:Speakers: Jahmall Bersini (Ruđer Bošković Institute)\nThe l
arge-charge expansion can be employed to find and test dualities in QFT. I
illustrate this point by investigating the quartic O(N) model between fou
r and six dimensions\, where it develops a metastable UV fixed point that
is believed to be equivalent to the IR fixed point of an O(N) model featur
ing cubic interactions. By focusing on the cubic model just below six dime
nsions\, I show how large-charge methods allow matching an infinite series
of terms between the two descriptions\, reinforcing the conjectured equiv
alence. Next\, I analyze the stability of the large-charge sector of the t
wo models by discussing the onset of complex CFT dynamics above a critical
value of the charge.\n\nhttps://indico.ipmu.jp/event/321/contributions/59
52/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5952/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Large quantum number expansion in O(2N) vector model and Resurgenc
e
DTSTART;VALUE=DATE-TIME:20210902T153000Z
DTEND;VALUE=DATE-TIME:20210902T160000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5951@indico.ipmu.jp
DESCRIPTION:Speakers: Ioannis Kalogerakis (University of Bern)\nIn this ta
lk I will discuss the O(2N) model at criticality in three dimensions in th
e limit where the charge Q and N are taken to be large. The large-charge e
xpansion turns out to be an asymptotic series and resurgent methods can be
applied to obtain an unambiguous semi-classical reconstruction of this ex
pansion. It contains non-perturbative corrections and it allows to extend
the validity of the EFT to any value of the charge. Otherwise\, this recon
struction can be emanated from a saddle point expansion of worldline path
integrals for free particles moving on spheres.\n\nhttps://indico.ipmu.jp/
event/321/contributions/5951/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5951/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Comments on Large Charge and Holography
DTSTART;VALUE=DATE-TIME:20210903T133000Z
DTEND;VALUE=DATE-TIME:20210903T143000Z
DTSTAMP;VALUE=DATE-TIME:20240417T020703Z
UID:indico-contribution-321-5950@indico.ipmu.jp
DESCRIPTION:Speakers: Shota Komatsu (CERN)\nI will discuss three topics on
the large charge limit and holography. First\, I will discuss general fea
tures of the large-charge limit of superconformal field theories at large
N. In particular\, I will point out a simple setup to analyze the large ch
arge expansion of the planar N=4 super Yang-Mills and discuss its holograp
hic interpretation. Second\, I will point out the hidden symmetry of the d
ouble-scaling limit of N=4 super Yang-Mills at large charge. Third I will
discuss the large-charge limit of the defect CFT on the Wilson line and it
s relation to the matrix model.\n\nhttps://indico.ipmu.jp/event/321/contri
butions/5950/
LOCATION:Online
URL:https://indico.ipmu.jp/event/321/contributions/5950/
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