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UID:db009dfe-5572-40ec-927d-fe947002433c
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X-WR-CALNAME:IAS Physics
BEGIN:VEVENT
UID:3aa08fd5-167c-41af-bfd4-f01d905f25f8
DTSTAMP:20200602T184400Z
CREATED:20200113T160109Z
DESCRIPTION:Topic: Covariant Phase Space with Boundaries\n\nSpeaker: Daniel
Harlow\, Massachusetts Institute of Technology\n\nVideo: https://video.ia
s.edu/het/2020-0316-DanielHarlow\n\nTo connect to the HET Seminar via Zoom
\, please do the following:\n1 - If you have Zoom installed on your device
\, enter the following meeting ID: 434238729\, click Join Meeting.\n2 - If
you do not have Zoom installed\, click the following link to download and
install: https://theias.zoom.us/j/434238729\n3 - Once installed\, click t
he very same link to connect to the meeting.\n\nAbstract: The Hamiltonian
formulation of mechanics has many advantages\, but its standard presentati
on destroys manifest covariance. This can be avoided by using the 'covaria
nt phase formalism' of Iyer and Wald\, but until recently this formalism h
as suffered from several ambiguities related to boundary terms and total d
erivatives. In this talk I will present a new version of the formalism whi
ch incorporates boundary effects from the beginning. This eliminates all a
mbiguities\, and leads to an algorithmic procedure for covariantly constra
cting the phase space and Hamiltonian of any Lagrangian field theory. It a
lso allows us to confirm that the Poisson bracket in covariant phase space
is indeed equivalent to an old proposal of Peierls for computing Poisson
brackets covariantly. Along the way I'll illustrate the formalism using va
rious examples. Based on work with Jie-qiang Wu.
DTSTART:20200316T183000Z
DTEND:20200316T183000Z
LAST-MODIFIED:20200401T001710Z
LOCATION:https://theias.zoom.us/j/434238729
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/107821
END:VEVENT
BEGIN:VEVENT
UID:772c6aaa-b7d9-4ba7-8862-8cf7d7f6d7c0
DTSTAMP:20200602T184400Z
CREATED:20200220T142224Z
DESCRIPTION:Topic: How to See Everything in the Entanglement Wedge\n\nSpeak
er: Adam Levine\, Member\, School of Natural Sciences\, Institute for Adva
nced Study\n\nVideo: https://video.ias.edu/HET/2020/03/20-AdamLevine\n\nTo
connect to the HET Seminar via Zoom\, please do the following:\n1 - If yo
u have Zoom installed on your device\, enter the following meeting ID: 430
399907\nclick Join Meeting.\n2 - If you do not have Zoom installed\, click
the following link to download and install: https://theias.zoom.us/j/4303
99907\n3 - Once installed\, click the very same link to connect to the mee
ting.\n\nAbstract: We will describe work in progress in which we argue tha
t a generalization of the procedure developed by Gao-Jafferis-Wall can all
ow one to see the entirety of the entanglement wedge. Gao-Jafferis-Wall de
monstrated that one can see excitations behind the horizon by deforming th
e boundary Hamiltonian using a non-local operator. We will argue in a simp
le class of examples that deforming the boundary Hamiltonian by a specific
modular Hamiltonian can allow one to see (almost) everything in the entan
glement wedge. Time permitting\, we may comment on connections to previous
proposals for bulk reconstruction and possible future directions.
DTSTART:20200320T174500Z
DTEND:20200320T174500Z
LAST-MODIFIED:20200401T001851Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/109481
END:VEVENT
BEGIN:VEVENT
UID:dee5bd1e-f2cf-40bf-8b1f-2fd9dcaa6016
DTSTAMP:20200602T184400Z
CREATED:20200320T134053Z
DESCRIPTION:Topic: Solving Random Matrix Models with Positivity\n\nSpeaker:
Henry Lin\, Princeton University\n\nVideo: https://video.ias.edu/HET/2020
/0327-HenryLin\n\nTo connect to the HET Seminar via Zoom\, please do the f
ollowing:\n1 - If you have Zoom installed on your device\, enter the follo
wing meeting ID: 730333408\nclick Join Meeting.\n2 - If you do not have Zo
om installed\, click the following link to download and install: https://t
heias.zoom.us/j/730333408\n3 - Once installed\, click the very same link t
o connect to the meeting.\n\nAbstract: A new approach to solving random ma
trix models directly in the large N limit is developed. First\, a set of n
umerical values for some low-pt correlation functions is guessed. The larg
e N loop equations are then used to generate values of higher-pt correlati
on functions based on this guess. Then one tests whether these higher-pt f
unctions are consistent with positivity requirements\, e.g.\, tr M^{2k} >
0. If not\, the guessed values are systematically ruled out. In this way\,
one can constrain the correlation functions of random matrices to a tiny
subregion which contains (and perhaps converges to) the true solution. Thi
s approach is tested on single and multi-matrix models and handily reprodu
ces known solutions. It also produces strong results for multi-matrix mode
ls which are not believed to be solvable. A tantalizing possibility is tha
t this method could be used to search for new critical points\, or string
worldsheet theories.
DTSTART:20200327T174500Z
DTEND:20200327T174500Z
LAST-MODIFIED:20200401T002017Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/110186
END:VEVENT
BEGIN:VEVENT
UID:2d8f599a-16ab-4e04-a473-fa86532483f6
DTSTAMP:20200602T184400Z
CREATED:20200302T174327Z
DESCRIPTION:Topic: Geometry and 5d N=1 QFTs\n\nSpeaker: Lakshya Bhardwaj\,
Harvard University\n\nVideo: https://video.ias.edu/HET/2020/0330-LakshyaBh
ardwaj\n\nTo connect to the HET Seminar via Zoom\, please do the following
:\n1 - If you have Zoom installed on your device\, enter the following mee
ting ID: 730333408\nclick Join Meeting.\n2 - If you do not have Zoom insta
lled\, click the following link to download and install: https://theias.zo
om.us/j/730333408\n3 - Once installed\, click the very same link to connec
t to the meeting.\n\nAbstract: I will explain that a geometric theory buil
t upon the theory of complex surfaces can be used to understand wide varie
ty of phenomena in five-dimensional supersymmetric theories\, which includ
es the following:\n\n- Classification of 5d superconformal field theories
(SCFTs).\n- Enhanced flavor symmetries of 5d SCFTs.\n- 5d N=1 gauge theory
descriptions of 5d and 6d SCFTs.\n- Dualities between 5d N=1 gauge theori
es.\n- T-dualities between 6d N=(1\,0) little string theories.\n\nThis rel
ationship between geometry and 5d theories is based on M-theory and F-theo
ry compactifications.
DTSTART:20200330T183000Z
DTEND:20200330T183000Z
LAST-MODIFIED:20200401T002126Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/109851
END:VEVENT
BEGIN:VEVENT
UID:b8c97cc5-0bfc-441a-85c7-c7247c9fc4a9
DTSTAMP:20200602T184400Z
CREATED:20200221T145442Z
DESCRIPTION:Topic: A New Topological Symmetry of Asymptotically Flat Spacet
imes\n\nSpeaker: Uri Kol\, New York University\n\nVideo: https://video.ias
.edu/HET/2020/0413-UriKol\n\nTo connect to the HET Seminar via Zoom\, plea
se do the following:\n1 - If you have Zoom installed on your device\, ente
r the following meeting ID: 730333408 - click Join Meeting.\n2 - If you do
not have Zoom installed\, click the following link to download and instal
l: https://theias.zoom.us/j/730333408\n3 - Once installed\, click the very
same link to connect to the meeting.\n\nAbstract: I will show that the is
ometry group of asymptotically flat spacetimes contains\, in addition to t
he BMS group\, a new dual supertranslation symmetry. The corresponding new
conserved charges are akin to the large magnetic U(1) charges in QED. The
y factorize the Hilbert space of asymptotic states into distinct super-sel
ection sectors and reveal a rich topological structure exhibited by the as
ymptotic metric. I will describe this structure and some resulting applica
tions\, including the construction of a gravitational-magnetic monopole so
lution analogous to the Wu-Yang monopole and a new gravitational duality a
kin to electric-magnetic duality.
DTSTART:20200413T150000Z
DTEND:20200413T150000Z
LAST-MODIFIED:20200413T194627Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/109566
END:VEVENT
BEGIN:VEVENT
UID:5bd13eb4-b6f5-4b30-b064-ff3a67e05d09
DTSTAMP:20200602T184400Z
CREATED:20200220T142434Z
DESCRIPTION:Topic: A Tutorial on Entanglement Island Computations\n\nSpeake
r: Raghu Mahajan\, Member\, School of Natural Sciences\, Institute for Adv
anced Study\n\nTo connect to the HET Seminar via Zoom\, please do the foll
owing:\n1 - If you have Zoom installed on your device\, enter the followin
g meeting ID: 730333408\, click Join Meeting.\n2 - If you do not have Zoom
installed\, click the following link to download and install: https://the
ias.zoom.us/j/730333408\n3 - Once installed\, click the very same link to
connect to the meeting.\n\nAbstract: In this talk we will present details
of quantum extremal surface computations in a simple setup\, demonstrating
the role of entanglement islands in resolving entropy paradoxes in gravit
y. The setup involves eternal $AdS_2$ black holes in thermal equilibrium w
ith auxiliary bath systems. We will also describe the extension of this se
tup to higher dimensions using Randall-Sundrum branes.
DTSTART:20200417T174500Z
DTEND:20200417T174500Z
LAST-MODIFIED:20200409T131746Z
LOCATION:via ZOOM
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/node/109486
END:VEVENT
BEGIN:VEVENT
UID:a713a8f2-fdc0-4c55-930d-a2f63df45802
DTSTAMP:20200602T184400Z
CREATED:20200417T170621Z
DESCRIPTION:Topic: Twisted M-theory and Holography\n\nSpeaker: Davide Gaiot
to\, Perimeter Institute\n\nTo connect to the HET Seminar via Zoom\, pleas
e do the following:\n1 - If you have Zoom installed on your device\, enter
the following meeting ID: 730333408 - click Join Meeting.\n2 - If you do
not have Zoom installed\, click the following link to download and install
: https://theias.zoom.us/j/730333408\n3 - Once installed\, click the very
same link to connect to the meeting.\n\nAbstract: A few years ago\, K.Cost
ello proposed how to isolate a self-contained\, protected subsector of the
M2 brane $AdS_4/CFT_3$ correspondence and demonstrated the holographic du
ality explicitly for the OPE of the corresponding boundary local operators
. The construction can be naturally extended to protected correlation func
tions\, but several new challenges arise. I will discuss how to take the l
arge N limit on the $CFT_3$ side of the story.
DTSTART:20200427T173000Z
DTEND:20200427T173000Z
LAST-MODIFIED:20200423T164523Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/110576
END:VEVENT
BEGIN:VEVENT
UID:7f578a21-ff8d-411e-b4b2-2b5d8edac5ed
DTSTAMP:20200602T184400Z
CREATED:20200318T150451Z
DESCRIPTION:Topic: A Quantum Circuit Interpretation of Evaporating Black Ho
le Geometry\n\nSpeaker: Ying Zhao\, Member\, School of Natural Sciences\,
Institute for Advanced Study\n\nVideo: https://video.ias.edu/HET/2020/0501
-YingZhao\n\nTo connect to the HET Seminar via Zoom\, please do the follow
ing:\n1 - If you have Zoom installed on your device\, enter the following
meeting ID: 730333408\, click Join Meeting.\n2 - If you do not have Zoom i
nstalled\, click the following link to download and install: https://theia
s.zoom.us/j/730333408\n3 - Once installed\, click the very same link to co
nnect to the meeting.\n\nAbstract: When Alice shares thermofield double wi
th Bob\, her time evolution can make the wormhole grow. We identify differ
ent kinds of operations Alice can do as being responsible for the growth o
f different parts of spacetime and see how it fits together with subregion
duality. With this\, we give a quantum circuit interpretation of evaporat
ing black hole geometry. We make an analogy between the appearance of isla
nd for evaporating black hole and the transition from two-sided to one-sid
ed black hole in the familiar example of perturbed thermofield double. If
Alice perturbs thermofield double and waits for scrambling time\, she will
have a one-sided black hole with interior of her own. We argue that by si
milar mechanism the radiation gets access to the interior (island forms) a
fter Page time. The growth of the island happens as a result of the consta
nt transitions from two-sided to one-sided black holes.
DTSTART:20200501T174500Z
DTEND:20200501T174500Z
LAST-MODIFIED:20200505T140047Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/110166
END:VEVENT
BEGIN:VEVENT
UID:dcd19ca4-35eb-422f-8414-f75f8eb93e9f
DTSTAMP:20200602T184400Z
CREATED:20200505T132655Z
DESCRIPTION:Topic: Entanglement Entropy in Flat Holography\n\nSpeaker: Wei
Song\, Member\, School of Natural Sciences\, Institute for Advanced Study\
; Tsinghua University\n\nVideo: https://video.ias.edu/HET/2020/0515-WeiSon
g\n\nTo connect to the HET Seminar via Zoom\, please do the following:\n1
- If you have Zoom installed on your device\, enter the following meeting
ID: 730333408\, click Join Meeting.\n2 - If you do not have Zoom installed
\, click the following link to download and install: https://theias.zoom.u
s/j/730333408\n3 - Once installed\, click the very same link to connect to
the meeting.\n\nAbstract: The appearance of BMS symmetry as the asymptoti
c symmetry of Minkowski spacetime suggests a holographic relation between
Einstein gravity and quantum field theory with BMS invariance\, dubbed BMS
FT. With a three dimensional bulk\, the dual BMSFT is a non-Lorentz invari
ant\, two dimensional field theory with infinite-dimensional symmetries. I
n this talk\, I will argue that entanglement entropy in BMSFT can be descr
ibed by a swing surface in the bulk. For a single interval at null infinit
y\, the corresponding swing surface consists of two ropes which are null g
eodesics emanating from the entangling surface at the boundary\, and a ben
ch\, which is a spacelike geodesic extremizing the distance between the ro
pes.
DTSTART:20200515T174500Z
DTEND:20200515T174500Z
LAST-MODIFIED:20200518T001919Z
LOCATION:via ZOOM
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/110856
END:VEVENT
END:VCALENDAR