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X-WR-CALNAME:IAS Physics-external
BEGIN:VEVENT
UID:efa5680f-6d08-40cc-b794-4a8b864c41db
DTSTAMP:20191212T085849Z
CREATED:20190816T191502Z
DESCRIPTION:Topic: Conformal Field Theory: From Boiling Water to Quantum Gr
avity\n\nSpeaker: Silviu Pufu\, Princeton University\n\nConformal Field Th
eory (CFT) is a framework used to describe physical systems with no intrin
sic length or energy scales. CFTs have wide applicability across theoretic
al physics\, ranging from critical points in the phase diagrams of water o
r magnetic materials to the low-energy dynamics of extended objects in str
ing theory. In this talk\, I will begin by describing how CFTs can be used
to understand critical phenomena. I will then discuss recent ideas that l
ed to tremendous progress in obtaining a quantitative understanding of var
ious corners in the space of all possible CFTs. I will end by discussing h
ow CFTs can be used to describe and learn about Quantum Gravity in the pre
sence of a negative cosmological constant.
DTSTART:20190912T200000Z
DTEND:20190912T210000Z
LAST-MODIFIED:20190905T151502Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/103051
END:VEVENT
BEGIN:VEVENT
UID:e3ab19f9-02f7-47b3-ae4d-48f6062c9266
DTSTAMP:20191212T085849Z
CREATED:20190905T151502Z
DESCRIPTION:Topic: Large Scale Structure Signals of Neutrino Decay\n\nSpeak
er: Yushin Tsai\, University of Maryland\n\nIn the next decade\, improveme
nts in the CMB and Large Scale Structure (LSS) measurements will make the
universe an excellent laboratory for neutrino physics. Besides knowing the
sum of neutrino masses\, we can better answer questions about neutrino pr
operties\, such as how long the SM neutrinos can live? In this talk\, I wi
ll explain the LSS signals of neutrino decay and show that the next genera
tion LSS and CMB lensing measurements can either extend the lifetime bound
on SM neutrinos to a cosmological time scale\, or probe the distinct sign
atures of neutrino decay.
DTSTART:20190917T200000Z
DTEND:20190917T210000Z
LAST-MODIFIED:20190905T151502Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/104176
END:VEVENT
BEGIN:VEVENT
UID:56d5c480-d777-48ac-8efe-ebc284c696f3
DTSTAMP:20191212T085849Z
CREATED:20190816T194502Z
DESCRIPTION:Topic: A Look at Hadronization via High Multiplicity\n\nSpeaker
: Elena Kokoulina\, JINR-Dubna\n\nMultiparticle production is studied expe
rimentally and theoretically in QCD that describes interactions in the lan
guage of quarks and gluons. In the experiment the real hadrons are registe
red. For transfer from quarks and gluons to observed hadrons various pheno
menological models are used.In order to describe the high multiplicity reg
ion\, we offer a gluon dominance model (GDM). It represents a convolution
of two stages. First stage is described as a part of QCD. For second one (
hadronisation)\, the phenomenological model is used. To describe hadronisa
tion\, a scheme has been proposed\, consistent with experimental data in t
he region of its dominance. Comparison of this model with data on $e^+e^-$
annihilation over a wide energy interval (up to 200 GeV) confirms the fra
gmentation mechanism of hadronisation\, the development of the quark-gluon
cascade with energy increase with a domination of bremsstrahlung gluons.T
he description of topological cross sections in $pp$ collisions within of
GDM testifies that in hadron collisions the mechanism of hadronisation is
being replaced by the recombination one. At that point\, gluons play an ac
tive role in the multiparticle production process\, and valence quarks are
passive. They stay in the leading particles\, and only the gluon splittin
g is responsible for the region of high multiplicity.GDM with inclusion of
intermediate quark charged topologies describes topological cross section
s in a proton-antiptoton annihilation and explains linear growth of a seco
ndary correlative momentum in the negative area.The scaled variance of a n
eutral pion number mesuared by us is rising abruptly in the region of high
total multiplicity and differs from Monte Carlo predictions by seven stan
dard deviations. The growth of fluctuations of the neutral pion number in
this region may indicate the formation of a pion (Bose-Einstein) condensat
e. Despite the growth of fluctuations on the neutral number\, their averag
e remains equal to 1/3 of the total pion number.
DTSTART:20190918T180000Z
DTEND:20190918T193000Z
LAST-MODIFIED:20190905T151502Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Physics Seminar
URL:https://www.ias.edu/node/103071
END:VEVENT
BEGIN:VEVENT
UID:ba093f61-9922-43da-9054-87076e129e09
DTSTAMP:20191212T085849Z
CREATED:20190816T192004Z
DESCRIPTION:Topic: The Quantum Black Hole: How Exotic Physics May Enter\n\n
Speaker: Gerard \'t Hooft\, Utrecht University\n\nQuantising a black hole
can be done starting with conventional physics. We just assume matter to k
eep the form of point particles until they come close to the horizon. The
gravitational back reaction of these particles generates a novel relation
between particles going in and particles going out\, enabling us to transf
orm in-going particles into out-going ones. This transformation removes “f
irewalls” along the future and past horizons\, but it strongly affects spa
ce-time inside a black hole. It subsequently allows us\, and indeed forces
us\, to identify antipodal points on the horizon. We argue that this exot
ic modification of the boundary condition is the only way to restore unita
rity for the quantum evolution operator\, and to identify the black hole m
icrostates. Some mysteries\, however\, remain unresolved.
DTSTART:20190919T200000Z
DTEND:20190919T210000Z
LAST-MODIFIED:20190816T192004Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/103056
END:VEVENT
BEGIN:VEVENT
UID:91b91087-df02-4d49-9e15-f1e6227f0aae
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: The Non-Local Non-Linear Sigma Model\n\nSpeaker: Christi
an Jepsen\, Princeton University\n\nIn this talk\, based on work with S. G
ubser\, Z. Ji\, B. Trundy\, and A. Yarom\, I present a scalar theory descr
ibed by an action given in terms of a bi-local integral of a power law fac
tor\, with an exponent parameter s\, multiplied by the squared arc length
between points on the target manifold. Depending on the choice of s and of
dimension\, the theory can reduce to the usual sigma model\, higher deriv
ative versions thereof\, or to a non-local theory with potential applicati
ons to the dynamics of M2-branes. I will also discuss the renormalization
of the theory at one-loop level.
DTSTART:20190920T174500Z
DTEND:20190920T190000Z
LAST-MODIFIED:20190905T151502Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/102996
END:VEVENT
BEGIN:VEVENT
UID:2ee35cb4-4f43-4470-9a53-66b07c000a33
DTSTAMP:20191212T085849Z
CREATED:20190905T151502Z
DESCRIPTION:Topic: Probing the Quantum Mechanics of Many-Body Chaos\n\nSpea
ker: Klaus Richter\, University of Regensburg\, Germany\n\nThe dynamics an
d spread of quantum information in complex many-body systems is presently
attracting\na lot of attention across various fields\, ranging from cold a
tom physics via condensed quantum matter\nto high energy physics and quant
um gravity. This includes questions of how a quantum system thermalizes\na
nd phenomena like many-body interference and localization\, more generally
non-classicality in many-particle\nquantum physics. Here concepts that ar
e based on echoes\, i.e. rewinding time\, provide a useful way to monitor
complex quantum dynamics and its stability. Central to these developments
are so-called out-of-time-order correlators (OTOCs) as sensitive probes fo
r chaos and the temporal growth of complexity in interacting systems.\nWe
will address such phenomena for quantum critical and quantum chaotic syste
ms using semiclassical path\nintegral techniques based on interfering Feyn
man paths\, thereby bridging the classical and quantum many-body world and
allowing for deriving random matrix results. These methods enable us to c
ompute echoes and\nOTOCs including entanglement and correlation effects. M
oreover\, on the numerical side we devise a\nsemiclassical method for Bose
-Hubbard systems far-out-of equilibrium that allows us to calculate many-b
ody\nquantum interference on time scales far beyond the famous Ehrenfest/s
crambling time.
DTSTART:20190923T171500Z
DTEND:20190923T181500Z
LAST-MODIFIED:20190905T151502Z
LOCATION:Jadwin Hall\, PCTS Seminar Room 407
SUMMARY:Condensed Matter Seminar
URL:https://www.ias.edu/node/104186
END:VEVENT
BEGIN:VEVENT
UID:ce390ee1-054c-4c31-9384-46aa3bfea9c3
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: Walking\, Weakly First Order Phase Transitions and Compl
ex CFTs\n\nSpeaker: Bernardo Zan\, Princeton University\n\nI will discuss
walking behavior in gauge theories and weakly first order phase transition
in statistical models. Despite being phenomena appearing in very differen
t physical systems\, they both show a region of approximate scale invarian
ce. They can be understood as a RG flow passing between two fixed points l
iving at complex couplings\, which we call complex CFTs. By using conforma
l perturbation theory\, knowing the conformal data of the complex CFTs all
ows us to make predictions on the observables of the walking theory. I wil
l also discuss some two-dimensional examples.
DTSTART:20190923T183000Z
DTEND:20190923T200000Z
LAST-MODIFIED:20190913T151502Z
LOCATION:Jadwin Hall\, PCTS Seminar Room 407
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103001
END:VEVENT
BEGIN:VEVENT
UID:826ad341-1313-4216-9165-ea9aa2cbbdcf
DTSTAMP:20191212T085849Z
CREATED:20190816T193002Z
DESCRIPTION:Topic: Looking into Jets with Machine Learning\n\nSpeaker: Seba
stian Macaluso\, New York University\n\nRecent work has introduced a corre
spondence between jets and natural languages. In this talk\, I will review
how machine learning\, with this natural language processing point of vie
w\, is changing the way we are thinking about jets. First\, I will describ
e a very effective model for classification and regression tasks. Next\, I
will introduce a simplified model to aid in machine learning research for
jet physics\, that captures the essential ingredients of parton shower ge
nerators in full physics simulations. I will discuss how this line of rese
arch provides new insights into jets substructure and could lead to a syst
ematic fit of a physics model to data.
DTSTART:20190924T200000Z
DTEND:20190924T210000Z
LAST-MODIFIED:20190913T151502Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103066
END:VEVENT
BEGIN:VEVENT
UID:c26cdd9f-7f66-48b0-b63b-9659cf762f47
DTSTAMP:20191212T085849Z
CREATED:20190702T133002Z
DESCRIPTION:Topic: 'The Dawn of Gravitational Wave Astronomy' A New Window
on the Universe\n\nSpeaker: Beverly Berger\, Stanford University\n\n
DTSTART:20190924T230000Z
DTEND:20190925T010000Z
LAST-MODIFIED:20190913T131502Z
LOCATION:McDonnell Hall A-01
SUMMARY:Forefronts of Gravitational Physics
URL:https://www.ias.edu/node/102036
END:VEVENT
BEGIN:VEVENT
UID:0c65d275-c81c-40d1-bc13-c4d82013f75f
DTSTAMP:20191212T085849Z
CREATED:20190717T163002Z
DESCRIPTION:Topic: Forefronts of Gravitational Physics\n\nThis is a satelli
te event in association with the annual [`Origins of the Universe'](http:/
/www.physics.princeton.edu/~cosmo/bouncingcosmology/workshops.html) confer
ence that takes place Sept 26-27\, 2019 at the Simons Foundation in New Yo
rk City's Flatiron District.\nConfirmed Speakers:\n\n- [Bruce Allen (Max P
lanck Institute for Gravitational Physics)](http://www.physics.princeton.e
du/~cosmo/bouncingcosmology/workshops.html#)\n- [Beverly Berger (Stanford
University)](http://www.physics.princeton.edu/~cosmo/bouncingcosmology/wor
kshops.html#)\n- [Thibault Damour (IHES)](http://www.physics.princeton.edu
/~cosmo/bouncingcosmology/workshops.html#)\n- [Karsten Danzmann (Max Planc
k Institute for Gravitational Physics)](http://www.physics.princeton.edu/~
cosmo/bouncingcosmology/workshops.html#)\n- [Sean McWilliams (West Virgini
a University)](http://www.physics.princeton.edu/~cosmo/bouncingcosmology/w
orkshops.html#)\n- [Slava Mukhanov (Ludwig-Maximilians-University\, Munich
)](http://www.physics.princeton.edu/~cosmo/bouncingcosmology/workshops.htm
l#)\n- [Igor Rodnianski (Princeton University)](http://www.physics.princet
on.edu/~cosmo/bouncingcosmology/workshops.html#)\n- [Richard Woodard (Univ
ersity of Florida\, Gainesville)](http://www.physics.princeton.edu/~cosmo/
bouncingcosmology/workshops.html#)
DTSTART:20190925T123000Z
DTEND:20190925T220000Z
LAST-MODIFIED:20190816T194502Z
LOCATION:PCTS | Jadwin Hall 4th Floor | Seminar Room 407
SUMMARY:Second Annual Simons Fall Workshop
URL:https://www.ias.edu/node/102146
END:VEVENT
BEGIN:VEVENT
UID:b98567ad-a2ab-4ff5-a216-1cd48aab2463
DTSTAMP:20191212T085849Z
CREATED:20190816T192004Z
DESCRIPTION:Topic: Supernova Explosion Simulations in Three Dimensions\n\nS
peaker: Adam Burrows\, Princeton University\n\nUsing our state-of-the-art
code Fornax we have simulated the collapse and explosion of the cores of m
any massive-star models in three spatial dimensions. This is the most comp
rehensive set of realistic 3D core-collapse supernova simulations yet perf
ormed and has provided very important insights into the mechanism and char
acter of this 50-year-old astrophysical puzzle. I will present detailed re
sults from this suite of runs and the novel conclusions derived from our n
ew capacity to simulate many 3D\, as opposed to 2D and 1D\, full physics m
odels every year. This new capability\, enabled by this new algorithm and
modern HPC assets\, is poised to transform our understanding of this centr
al astrophysical puzzle.
DTSTART:20190926T200000Z
DTEND:20190926T210000Z
LAST-MODIFIED:20190816T192004Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/103061
END:VEVENT
BEGIN:VEVENT
UID:9958b634-3401-4210-8ba5-545fbdb2dd3d
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: Probing Nonperturbative Structures in Gravity with SYK M
odel\n\nSpeaker: Mikhail Khramtsov\, Steklov Institute\n\nMy talk is devot
ed to studies of large N saddle point structures in the SYK model beyond t
he commonly used approximations\, in particular the replica-diagonal assum
ption and the conformal limit. We will discuss new solutions of the saddle
point equations in the SYK and their role in physics of the model and in
the gravity dual description. We will focus on the replica-nondiagonal exa
ct saddle points\, which introduce small nonperturbative effects in the 1/
N expansion of SYK. We will consider their properties and implications for
the gravity dual\, a UV completion of JT gravity.\nThe talk is based on p
apers arXiv:1811.04831\, arXiv:1905.04203 and on current work in progress.
DTSTART:20191001T180000Z
DTEND:20191001T193000Z
LAST-MODIFIED:20190927T184501Z
LOCATION:Jadwin Hall\, Room A06
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103006
END:VEVENT
BEGIN:VEVENT
UID:a7c19cb6-7756-4e21-a1ed-680cbd049e71
DTSTAMP:20191212T085849Z
CREATED:20190816T194502Z
DESCRIPTION:Topic: Looking for Axion Dark Matter: From Dwarf Galaxies to Pu
lsars\n\nSpeaker: Andrea Caputo\, Valencia University\n\nAxion and Axion-l
ike particles are fascinating dark matter candidates and a great effort ha
s been devoted to their study\, both theoretically and experimentally. In
this talk I will discuss two different astrophysical searches. The first o
ne consists in looking with radio telescopes for the spontaneous decay of
axion dark matter using different targets as Dwarf Galaxies\, Clusters or
the Galactic Center. The second one uses the parity violating axion intera
ctions to exploit the extreme precision of pulsar timing measurements and
look for oscillations in the polarization angle of the pulsar signal.
DTSTART:20191001T200000Z
DTEND:20191001T210000Z
LAST-MODIFIED:20190816T194502Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103076
END:VEVENT
BEGIN:VEVENT
UID:c02019b7-c8f7-480a-82ac-aa6f8e30c8bf
DTSTAMP:20191212T085849Z
CREATED:20190927T184501Z
DESCRIPTION:Topic: Magic Angle Twisted Bilayer Graphene\n\nSpeaker: Allan H
. MacDonald\, University of Texas at Austin\n\nMoiré patterns are ubiquito
us in layered van der Waals materials and can now be fabricated with consi
derable control by combining mechanical exfoliation of van der Waals layer
s with tear and stack device fabrication techniques. I will explain why th
e electronic and optical properties of two-dimensional semiconductors and
semimetals are strongly altered in long-period moiré superlattices\, focus
ing in particular on the remarkable example of twisted bilayer graphene. W
hen twisted to a magic [1] relative orientation angle near 1 degree the mo
iré superlattice minibands of bilayer graphene become extremely narrow and
electronic correlations become strong. Experimental studies [2] of magic-
angle twisted bilayer graphene (MATBG) have demonstrated that the electron
ic ground state can be a superconductor\, a metal\, or an insulator\, depe
nding on the filling of the magic angle flat bands. Insulating states occu
r close to most integer values of the number of electrons per moiré superl
attice period\, whereas superconducting states are common at fractional mo
iré band filling factors. In some cases\, the insulating states are purely
orbital ferromagnets that exhibit a quantum anomalous Hall effect and hav
e superlattice bands with non-zero topological Chern indices C. I will dis
cuss progress that has been made toward understanding these remarkable pro
perties.[1] Moire bands in twisted double-layer graphene\, R. Bistritzer a
nd A.H. MacDonald\, PNAS 108\, 12233 (2011). [2] Magic-angle graphene supe
rlattices: a new platform for unconventional superconductivity\, Y. Cao et
al. Nature (2018).
DTSTART:20191003T200000Z
DTEND:20191003T210000Z
LAST-MODIFIED:20190927T184501Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/105111
END:VEVENT
BEGIN:VEVENT
UID:82f1a60d-b0db-4c30-96d4-f81e9b0dc2a3
DTSTAMP:20191212T085849Z
CREATED:20190917T140002Z
DESCRIPTION:Topic: Internal Geometry of Black Holes\n\nSpeaker: Paul Chesle
r\, Harvard University\n\nIt is widely believed that long after gravitatio
nal collapse\, the external geometry of black holes relaxes to the Kerr-Ne
wman solution. In contrast\, the interior geometry is not unique and depen
ds on initial conditions. I will discuss universal features of the interio
r of one-sided black holes in asymptotically flat space with a scalar fiel
d. In particular\, I will argue that generically there exists effective gr
avitational shocks at the would-be inner horizon\, a singular Cauchy horiz
on\, and a spacelike singularity at r = 0.
DTSTART:20191007T163000Z
DTEND:20191007T173000Z
LAST-MODIFIED:20190930T180002Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/104771
END:VEVENT
BEGIN:VEVENT
UID:ed960e80-4d8a-4c95-b005-c1729688336b
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: Supersymmmetric Lifshitz Field Theories\n\nSpeaker: Avia
Raviv-Moshe\, Tel-Aviv University\n\nLifshitz scaling is an anisotropic s
caling where time and space scale differently. Quantum field theories that
exhibit Lifshitz scale symmetry provide a framework for studying low ener
gy systems with an emergent dynamic scaling such as quantum critical point
s. Introducing supersymmetry to the Lifshitz algebra leads to a rich struc
ture that is less constrained compared to that of relativistic supersymmet
ry. We construct supersymmetric Lifshitz quantum field theories and study
their renormalization properties and RG flows. We show that models of Lifs
hitz supersymmetry that possess a holomorphic structure realize lines of q
uantum exact Lifshitz fixed points for various choices of spacetime dimens
ions and marginal supersymmetric interactions. The presented results are b
ased on two papers.
DTSTART:20191007T183000Z
DTEND:20191007T200000Z
LAST-MODIFIED:20190905T154502Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103011
END:VEVENT
BEGIN:VEVENT
UID:914ea342-5772-417b-8d05-30bcd5f9d6a3
DTSTAMP:20191212T085849Z
CREATED:20190819T133002Z
DESCRIPTION:Topic: Three-Point Functions in AdS3/CFT2 Holography\n\nSpeaker
: Andrea Dei\, ETH Zürich\n\nString theory on AdS3xS3xT4 with one unit of
NSNS flux has been recently argued to be dual to the symmetric product orb
ifold of T^4. The duality has been extended to the case of generic NSNS ba
ckground flux. I will consider the bosonic version of this duality and sho
w how to match null-vector constraints on three-point functions. I will ex
plain how some three-point functions can be explicitly derived and matched
on the two sides of the duality. This amounts to one of the very first ho
lographic matches of non-protected AdS3/CFT2 correlators.
DTSTART:20191008T190000Z
DTEND:20191008T200000Z
LAST-MODIFIED:20191001T184502Z
LOCATION:Jadwin Hall\, Room A06
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103116
END:VEVENT
BEGIN:VEVENT
UID:3250b838-adc5-492b-a952-383f96bff516
DTSTAMP:20191212T085849Z
CREATED:20190816T194502Z
DESCRIPTION:Topic: Conformal Freeze in\n\nSpeaker: Sungwoo Hong\, Cornell U
niversity\n\nConventionally\, the main focus for the cosmic evolution of o
ur universe has been on descriptions in terms of particles: dark matter (D
M) as massive particle\, and dark radiation\, if existing at all\, in the
form of massless or very light particle. In this talk\, I will discuss a s
cenario where conformal field theory (CFT) plays a crucial role in cosmolo
gy\, especially production of naturally light dark matter. When the Standa
rd Model (SM) couples to a sector of CFT\, I will argue that in the regime
where only the SM sector gets reheated\, the energy density of the CFT se
ctor is populated via energy injection from the SM (conformal freeze-in) a
nd can be reliably computed. Such CFT energy density\, redshifting like a
radiation\, will not account for DM unless somehow a mass gap is generated
in the CFT. Remarkably\, such a gap scale is dynamically generated due to
phase transitions of SM: electroweak and QCD. In this way\, DM energy tod
ay is produced in the early universe when it is not in gapped particle sta
te\, but a CFT state. Moreover\, DM mass scale consistent with observed re
lic density and other observational constraints (mostly bullet cluster and
warm dark matter bounds) turns out to be less than MeV. Therefore\, confo
rmal freeze-in provides a framework for naturally light DM.
DTSTART:20191008T200000Z
DTEND:20191008T210000Z
LAST-MODIFIED:20190927T184501Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103081
END:VEVENT
BEGIN:VEVENT
UID:c9ef443e-b0f1-41b9-9db5-2c4dd33173b4
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: dS Thermodynamics from Bulk and Horizon Characters\n\nSp
eaker: Zimo Sun\, Columbia University\n\nIn this talk\, I will discuss the
idea that the exact one-loop free energy of the static patch of D-dimensi
onal de Sitter space can be computed as a simple integral transform of an
SO(1\;D) bulk character corrected by an SO(1\; D-2) edge character\, for f
ields of arbitrary mass and spin. The bulk character captures the particle
content of the theory and counts quasinormal modes in the bulk. The edge
character counts edge modes on the horizon. I will also show the applicati
on of this formalism in 4D and 3D dS Vasiliev gravity. In the 4D case\, af
ter summing over spins\, there is a huge cancellation between the bulk and
edge characters\, leaving the character of a scalar living in three dimen
sions. In the 3D case\, I will discuss its relation with Chern Simons theo
ry.
DTSTART:20191011T174500Z
DTEND:20191011T190000Z
LAST-MODIFIED:20190927T184501Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103016
END:VEVENT
BEGIN:VEVENT
UID:9491734f-fb36-4408-a7fe-b7e4f3a7bc99
DTSTAMP:20191212T085849Z
CREATED:20190917T140002Z
DESCRIPTION:Topic: S-matrix in Flat Space from AdS/CFT\n\nSpeaker: Eliot Hi
jano\, Princeton Gravity Initiative\, Princeton University\n\nIt is curren
tly not well understood whether the holographic principle can be applied t
o asymptotically flat space-times. This talk will consider a flat limit of
AdS/CFT that leads to a formula relating S-matrix amplitudes in flat spac
e and conformal correlators in AdS/CFT. I will explain how to use the form
ula to compute S-matrices in simple examples\, and I will discuss how to r
ecast flat space physics concepts in the language of conformal field theor
y and holography. I will also discuss IR divergences and the construction
of an IR finite S-matrix using AdS/CFT.
DTSTART:20191014T163000Z
DTEND:20191014T173000Z
LAST-MODIFIED:20191008T140002Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/104776
END:VEVENT
BEGIN:VEVENT
UID:afdf1040-787b-48be-a0c4-b0941543ba36
DTSTAMP:20191212T085849Z
CREATED:20190816T194502Z
DESCRIPTION:Topic: Early-Universe Simulations of the Cosmological Axion\n\n
Speaker: Malte Buschmann\, University of Michigan\n\nWe perform high resol
ution simulations in a scenario where the Peccei-Quinn (PQ) symmetry is br
oken after inflation starting at the epoch before the PQ phase transition
and ending at matter-radiation equality. We characterize the spectrum of p
rimordial perturbations that are generated and comment on implications for
efforts to detect axion dark matter (DM). We also measure the DM density
at different simulated masses and argue that the correct DM density is obt
ained for an axion mass of 25.2 ± 11.0 µeV.
DTSTART:20191015T200000Z
DTEND:20191015T210000Z
LAST-MODIFIED:20190816T194502Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103086
END:VEVENT
BEGIN:VEVENT
UID:3886a59f-4c99-4a2d-ae29-cee5d5d07577
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: 4D Scattering as 2D Correlators\n\nSpeaker: Sabrina Gonz
alez Pasterski\, Princeton University\n\nThe asymptotic symmetry algebra o
f asymptotically flat spacetimes implies an infinity of conserved charges
for 4D scattering which can be neatly recast as 2D conformal Ward identiti
es. We cover recent progress on the proposed 4D/2D dictionary starting fro
m the conformally soft modes that appear as currents and extending our map
to a basis for finite energy scattering states.
DTSTART:20191018T174500Z
DTEND:20191018T190000Z
LAST-MODIFIED:20191011T132004Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103021
END:VEVENT
BEGIN:VEVENT
UID:e5c4dace-ae12-498b-83f8-03a5e9578df1
DTSTAMP:20191212T085849Z
CREATED:20190930T180002Z
DESCRIPTION:Topic: High Energy Collisions of Black Holes in Higher Dimensio
ns\n\nSpeaker: Will Cook\, Princeton Gravity Initiative\, Princeton Univer
sity\n\n
DTSTART:20191021T163000Z
DTEND:20191021T173000Z
LAST-MODIFIED:20191016T191502Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105211
END:VEVENT
BEGIN:VEVENT
UID:d8c1a25e-12ef-4cb9-b9ab-8d9cde485c72
DTSTAMP:20191212T085849Z
CREATED:20190816T190002Z
DESCRIPTION:Topic: ZZ Instantons and the Non-Perturbative Dual of c=1 Strin
g Theory\n\nSpeaker: Bruno Balthazar\, Harvard University\n\nWe study the
effect of ZZ instantons in c = 1 string theory\, and demonstrate that they
give rise to non-perturbative corrections to closed string scattering amp
litudes that do not saturate unitarity within the closed string sector. Be
yond the leading non-perturbative order\, logarithmic divergences are canc
eled between worldsheet diagrams of different topologies\, due to the Fisc
hler-Susskind-Polchinski mechanism. These results also allow us to propose
the exact non-perturbative matrix model dual of c=1 string theory.
DTSTART:20191021T183000Z
DTEND:20191021T200000Z
LAST-MODIFIED:20191011T132004Z
LOCATION:Jadwin Hall\, Room A07
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103026
END:VEVENT
BEGIN:VEVENT
UID:73db8e9c-1db7-4c02-b12d-8fcb703b72b3
DTSTAMP:20191212T085849Z
CREATED:20190828T161502Z
DESCRIPTION:Topic: Talk #1: Machine Learning Techniques for Many-Body Quant
um Systems\; Talk #2: Autoregressive Simulation of Many-body Quantum Syste
ms\n\nSpeaker: Giuseppe Carleo\, CCQ\, Flatiron Institute\, Or Sharir\, He
brew University of Jerusalem\n\nRegistration for each event is free\, but
required. Please click on the registration link below for each date\, as i
t becomes available.Talk #1: Machine Learning Techniques for Many-Body Qua
ntum SystemsIn this introductory seminar I will cover the main machine lea
rning techniques so-far adopted to study interacting quantum systems. I wi
ll first introduce the concept of neural-network quantum states [1]\, a re
presentation of the many-body wave-function based on artificial neural net
works. Theoretical aspects of these representations\, including the proble
m of including symmetries\, and their entanglement capacity will be discus
sed. Then\, I will show how neural-network quantum states can be used in a
variety of applications. Examples will be given for data-driven\, experim
ental analysis in the context of quantum state tomography [2]. I will also
show how these states can be used in variational applications to theoreti
cally study the physical properties of interacting many-body matter\, high
lighting recent applications to frustrated magnetism [3] and fermionic sys
tems [4].[1] Carleo\, and Troyer - Science 355\, 602 (2017)\; [2] Torlai\,
et al. - Nature Physics 14\, 447 (2018)\; [3] Choo\, et al. - arXiv:1903.
06713 (2019)\; [4] Pfau\, et al. - arXiv:1909.02487 (2019).Talk #2: Autore
gressive Simulation of Many-body Quantum SystemsUnderstanding phenomena in
systems of many interacting quantum particles\, known as quantum many-bod
y systems\, is one of the most sought-after objectives in contemporary phy
sics research. The challenge of simulating such systems lies in the extens
ive resources required for exactly modeling quantum wave-functions\, which
grows exponentially with the number of particles. Recently\, neural netwo
rks were demonstrated to be a promising approximation method of quantum wa
ve functions. However\, thus far\, this approach was mostly focused on mor
e traditional architectures such as Restricted Boltzmann Machines and smal
l fully-connected networks. In this talk\, we propose a method for scaling
this approach to support large modern architecture. Though significantly
more expressive\, such architectures do not lend themselves to the convent
ional methods for employing neural networks for simulating quantum systems
. A key part of the simulation is to sample according to the underlying di
stribution of particle configurations. Current methods rely on Markov-Chai
n Monte-Carlo sampling\, which is too expensive for use with modern archit
ectures\, effectively limiting their usable size and capacity. Inspired by
recent generative models\, we propose a specialized deep convolutional ar
chitecture that supports efficient and exact sampling\, completely circumv
enting the need for Markov Chain sampling. We demonstrate our approach can
obtain accurate results on larger system sizes than those currently acces
sible to other neural-network representation of quantum states.
DTSTART:20191022T154500Z
DTEND:20191022T173000Z
LAST-MODIFIED:20191018T182005Z
LOCATION:Jadwin Hall\, PCTS Seminar Room 407
SUMMARY:Deep Learning for Physics
URL:https://www.ias.edu/node/103596
END:VEVENT
BEGIN:VEVENT
UID:ef6b6595-2ee4-4d27-8b22-c21e4cce58e2
DTSTAMP:20191212T085849Z
CREATED:20190816T194502Z
DESCRIPTION:Topic: Functional Methods and Universal One-Loop Matching in HQ
ET and Beyond\n\nSpeaker: Marat Freytsis\, Rutgers University\n\nFunctiona
l methods\, in particular efficient reorganization of the one-loop effecti
ve action\, have recently made a reappearance in simplifying the problem o
f computing matching and running effects in Lorentz-invariant effective fi
eld theories (EFTs) such as the Standard Model Effective Field Theory. Thi
s has lead to the appearance of universal one-loop effective actions\, whe
re such effects are now known in closed form for arbitrary field-content.
These insights have not yet been brought to bear on modern kinematic EFTs
such as heavy quark (HQET) and soft-collinear effective theory despite the
ir greater focus on precision and the inclusion of higher-order effects. I
will present some first steps in developing functional one-step matching
formulae for EFTs where Lorentz symmetry is broken (or at least obscured)
using HQET as my focus but also commenting on more complicated multi-mode
EFTs as well.
DTSTART:20191022T200000Z
DTEND:20191022T210000Z
LAST-MODIFIED:20191018T153002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103091
END:VEVENT
BEGIN:VEVENT
UID:bddf0b0e-bb13-42e3-af6d-ae6c29e78d8b
DTSTAMP:20191212T085849Z
CREATED:20190930T180002Z
DESCRIPTION:Topic: Detecting Gravitational Waves With Disparate Detector Re
sponses: Two New Binary Black Hole Mergers\n\nSpeaker: Barack Zackay\, Ins
titute for Advanced Study\n\nNOTE: LUNCH WILL BE HELD AT 12:00 PM IN THE S
PACE NEXT TO THE PCTS SEMINAR ROOM.I will describe our continuing work for
extracting the most of the LIGO-VIRGO data. In this talk\, I will discuss
the process that was used to characterize the impact of non-Gaussian phen
omena (so called 'Glitches') I will then discuss the process that exploite
d the found properties in order to rank candidates based on one detector a
lone. I will then discuss how these candidates are then verified using ver
y little information in the less sensitive detector. Using this\, we found
two new events. One (GW170817A) is the highest mass event reported to dat
e. The other (GWC170402) was also very interesting\, as there are some sol
id signs for the expression of higher modes\, but a full coherent GR solut
ion that explains the signal is still lacking. Last\, I will discuss the i
mplications of this method for the future analysis of the ongoing third ob
serving run of the LIGO-VIRGO data.
DTSTART:20191104T173000Z
DTEND:20191104T183000Z
LAST-MODIFIED:20191030T200002Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105216
END:VEVENT
BEGIN:VEVENT
UID:099e17e6-5057-40e3-9abb-f0d5c46ea264
DTSTAMP:20191212T085849Z
CREATED:20190816T191502Z
DESCRIPTION:Topic: Chaotic and Thermodynamic Properties of two Coupled Sach
dev-Ye-Kitaev Models\n\nSpeaker: Jacobus Verbaarschot\, Stony Brook Univer
sity\n\nThe SYK Model was originally introduced as a random matrix model f
or the nuclear interaction that also describes the exponential rise of the
spectral density known as the Bethe formula. Exactly this behavior is the
hallmark of the Schwarzian action\, the low energy limit of the SYK model
\, which is the main reason for the excitement this model has brought to t
he field of Quantum Gravity. Another phenomenon in chaotic many-body quant
um systems is the existence of collective excitations. Remarkably\, they a
re present in the Maldacena-Qi model of two SYK models coupled by a spin-s
pin interaction\, which describes a phase transition between two black hol
es and a thermal phase. The collective state is the ground state which is
close to a Thermo-Field Double state. We find that for systems that can be
studied numerically\, the wave functions of the ground state show substan
tial deviations from the Thermo-Field Double state\, which suggests a non-
uniform convergence to this state in the limit of a large number of partic
les. The main topic of this talk is the discussion of the thermodynamical
and spectral properties of the Maldacena-Qi Model. We find a transition fr
om Poisson statistics in the tail of the the spectrum to RMT statistics at
higher energies\, when we separate the Hamiltonian according to the spin
mod 4 symmetry. We relate this order-chaos transition to the Hawking-Page
phase transition.
DTSTART:20191104T193000Z
DTEND:20191104T210000Z
LAST-MODIFIED:20191018T153002Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103031
END:VEVENT
BEGIN:VEVENT
UID:39e33e50-6018-4649-9313-a78eb16be25e
DTSTAMP:20191212T085849Z
CREATED:20190816T191502Z
DESCRIPTION:Topic: Born-Infeld Electrodynamics at One-Loop\n\nSpeaker: Call
um Jones\, University of Michigan\n\nThe Born-Infeld model is an effective
field theory of central importance describing the low-energy dynamics of
massless gauge bosons on the world-volume of D-branes. Though it is in man
y ways an exceptional model of nonlinear electrodynamics\, several aspects
of the physics of the Born-Infeld model remain mysterious. In this talk I
will explain how aspects of the model\, obscured in the traditional formu
lation of Lagrangian field theory\, are clarified by directly studying the
on-shell S-matrix. In particular in 3+1-dimensions\, classical Born-Infel
d has an electromagnetic duality symmetry which manifests in tree-level sc
attering amplitudes as the conservation of a chiral charge. Whether this c
onservation law can be preserved under perturbative quantization is presen
tly unknown. Using modern scattering amplitudes techniques\, we have initi
ated a study of the S-matrix of Born-Infeld at one-loop. I will describe h
ow generalized unitarity together with supersymmetric decomposition can be
used to explicitly calculate infinite classes of one-loop amplitudes\, an
d explain how the results are consistent with the existence of a quantum e
lectromagnetic duality.
DTSTART:20191105T200000Z
DTEND:20191105T210000Z
LAST-MODIFIED:20191018T153002Z
LOCATION:Jadwin Hall\, Room A06
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103036
END:VEVENT
BEGIN:VEVENT
UID:4fa5e694-64d5-4ee5-ac50-19b1a08bee99
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: Co-Decaying Dark Matter and its Cosmological Signatures
\n\nSpeaker: Brandon Melcher\, Syracuse University\n\nThis talk will follo
w the discussions found in https://arxiv.org/abs/1711.04773 andhttps://arx
iv.org/abs/1902.04082. We will discuss the cosmological implications of th
e Co-Decaying Dark Matter Model--a recently proposed mechanism for depleti
ng the density of dark matter through the decay of nearly degenerate parti
cles. This model generically predicts the existence of an Early Matter Dom
inated phase of universe evolution. We will show that this phase promotes
sub-structure growth and solar mass primordial black holes.
DTSTART:20191105T210000Z
DTEND:20191105T220000Z
LAST-MODIFIED:20191018T153002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/104191
END:VEVENT
BEGIN:VEVENT
UID:9d34bd24-11e0-40e9-a767-0fa11f5c489c
DTSTAMP:20191212T085849Z
CREATED:20190702T133002Z
DESCRIPTION:Attendance is free\, but space is limited\, so please register!
Speakers:\n\n- Sheperd Doeleman\n- Robbert Dijkgraaf\n- Wendy Freedman\n-
Gabriela Gonzalez\n- Theodore Jacobson\n- Sergiu Klainerman\n- Nergis Mav
alvala\n- Robert Myers\n- Malcolm Perry\n- Andrew Strominger\n- Neil Turok
\n- William Unruh
DTSTART:20191107T133000Z
DTEND:20191107T223000Z
LAST-MODIFIED:20191106T164538Z
LOCATION:Jadwin Hall\, 4th floor\, Princeton University
SUMMARY:Gravity Initiative Opening Celebration
URL:https://www.ias.edu/node/102041
END:VEVENT
BEGIN:VEVENT
UID:1d65a189-6e10-4cac-9b88-0f83e08159b4
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: The Event Horizon Telescope: Imaging a Black Hole\n\nSpe
aker: Shep Doeleman\, Center for Astrophysics | Harvard & Smithsonian\n\nT
he Event Horizon Telescope (EHT) is a Very Long Baseline Interferometry (V
LBI) array operating at the shortest possible wavelengths\, which can reso
lve the event horizons of the nearest supermassive black holes. Observing
at mm radio wavelengths enables detection of photons that originate from d
eep within the gravitational potential well of the black hole\, and travel
unimpeded to telescopes on the Earth. The primary goal of the EHT is to r
esolve and image the predicted ring of emission formed by the photon orbit
of a black hole and to eventually track dynamics of matter as it orbits c
lose to the event horizon. A sustained program of improvements to VLBI ins
trumentation and the addition of new sites through an international collab
orative effort led to Global observations in April 2017: the first campaig
n with the potential for horizon imaging. After 1.5 years of data reductio
n and analysis we report success: we have imaged a black hole. The resulti
ng image is an irregular but clear bright ring\, whose size and shape agre
e closely with the expected lensed photon orbit of a 6.5 billion solar mas
s black hole. This talk will cover the project and first results as well a
s future directions for a next-generation instrument that is aimed at real
-time black hole video.
DTSTART:20191107T210000Z
DTEND:20191107T220000Z
LAST-MODIFIED:20191018T153002Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/104196
END:VEVENT
BEGIN:VEVENT
UID:e6e5e8df-9c04-45d7-8512-f11e2d13680a
DTSTAMP:20191212T085849Z
CREATED:20190702T134502Z
DESCRIPTION:Topic: Einstein’s Dream — From the Big Bang to Black Holes\n\nS
peaker: Robbert Dijkgraaf\, Director\, Institute for Advanced Study\n\nWe
are living in the golden era of gravitational research\, realizing Einstei
n’s vision that by studying the geometry of space and time we can determin
e the origin\, composition\, and fate of the Universe. Cutting-edge techno
logy has opened up many new windows in science\, from the detection of the
remnants of the Big Bang and gravitational waves to the image of a superm
assive black hole. Yet\, deep questions remain about the dark matter\, dar
k energy\, and the nature of quantum space-time.
DTSTART:20191108T010000Z
DTEND:20191108T020000Z
LAST-MODIFIED:20191105T211501Z
LOCATION:McDonnell Hall\, Room A02
SUMMARY:The Gravity Initiative Opening Celebration - Public Lecture
URL:https://www.ias.edu/node/102051
END:VEVENT
BEGIN:VEVENT
UID:18a456fe-fb77-4274-9e3e-aef557ab8023
DTSTAMP:20191212T085849Z
CREATED:20190702T133002Z
DESCRIPTION:Speakers:\n\n- Sheperd Doeleman\n- Robbert Dijkgraaf\n- Wendy F
reedman\n- Gabriela Gonzalez\n- Theodore Jacobson\n- Sergiu Klainerman\n-
Nergis Mavalvala\n- Robert Myers\n- Malcolm Perry\n- Andrew Strominger\n-
Neil Turok\n- William Unruh
DTSTART:20191108T133000Z
DTEND:20191108T223000Z
LAST-MODIFIED:20191003T190001Z
LOCATION:Jadwin Hall\, 4th floor
SUMMARY:The Gravity Initiative Opening Celebration
URL:https://www.ias.edu/node/102046
END:VEVENT
BEGIN:VEVENT
UID:15e29f72-f6f7-4c25-83d3-affc2adb23a3
DTSTAMP:20191212T085849Z
CREATED:20190930T180002Z
DESCRIPTION:Topic: Strong Cosmic Censorship for AdS Black Holes and Its Con
nection to Diophantine Approximation\n\nSpeaker: Christoph Kehle\, Univers
ity of Cambridge\n\nI will present my recent results on the behavior of so
lutions to the Klein-Gordon equation on the interior of Reissner-Nordstöm-
AdS and Kerr-AdS. Despite the very slow logarithmic decay in the exterior\
, I show that linear waves arising from smooth data with Dirichlet boundar
y conditions at infinity remain bounded on the Cauchy horizon for Reissner
-Nordström-AdS. For Kerr-AdS\, however\, the situation is far more delicat
e: Depending on the Diophantine properties of the ratio of the black hole
parameters\, linear waves blow up or remain bounded at the Cauchy horizon
of Kerr-AdS.
DTSTART:20191111T173000Z
DTEND:20191111T183000Z
LAST-MODIFIED:20191105T210001Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105221
END:VEVENT
BEGIN:VEVENT
UID:648fff51-1ac0-40a9-9f6d-d498d9e3996b
DTSTAMP:20191212T085849Z
CREATED:20190816T191502Z
DESCRIPTION:Topic: S-matrix Bootstrap for Effective Field Theories\n\nSpeak
er: Joao Penedones\, École polytechnique fédérale de Lausanne\n\nI will ex
plain how the S-matrix Bootstrap for massless particles can be used to con
strain the space of Effective Field Theories (EFT). In particular\, I will
discuss the S-matrix bootstrap for massless particles in unitary\, relati
vistic two dimensional quantum field theories. In the context of flux tube
physics\, this allows us to constrain several terms in the S-matrix low e
nergy expansion or -- equivalently -- on Wilson coefficients of several ir
relevant operators showing up in the flux tube effective action. The S-mat
rices living at the boundary of the allowed space exhibit an intricate pat
tern of resonances with one sharper resonance whose quantum numbers\, mass
and width are precisely those of the world-sheet axion previously propose
d. Finally\, I will present work in progress on pion scattering amplitudes
and the chiral Lagrangian. The general method should be extendable to oth
er massless S-matrices including gauge and gravity theories.
DTSTART:20191111T193000Z
DTEND:20191111T210000Z
LAST-MODIFIED:20191105T211501Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103041
END:VEVENT
BEGIN:VEVENT
UID:47ac8968-2a5b-4c02-94b6-47cc8cf71e5c
DTSTAMP:20191212T085849Z
CREATED:20190816T200002Z
DESCRIPTION:Topic: Dark Thermal Histories\n\nSpeaker: Jessie Shelton\, Univ
ersity of Ilinois\n\nOne generic scenario for the dark matter of our unive
rse is that it resides in a hidden sector: it talks to other dark fields m
ore strongly than it talks to the Standard Model. I'll discuss some minima
l cosmological origin scenarios for this class of models and explore their
consequences for the observability of dark states today. Some results of
interest include simple\, WIMP-y models of dark matter with parametrically
novel behavior.
DTSTART:20191112T210000Z
DTEND:20191112T220000Z
LAST-MODIFIED:20191108T153002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103096
END:VEVENT
BEGIN:VEVENT
UID:4275f6ad-3928-40e7-a47f-a385321b64fe
DTSTAMP:20191212T085849Z
CREATED:20191018T160001Z
DESCRIPTION:Topic: Atomic Qubits in Silicon\n\nSpeaker: Michelle Simmons\,
University of New South Wales\, Australia\n\nPhosphorus atoms qubits in si
licon have demonstrated extremely long (up to 35 s) coherence times with >
99.9% fidelity in the highly manufacturable material silicon. Their small
size\, combined with the magnetically quiet environment of isotopically pu
re silicon\, make them analogous to ion trap qubits but in a scalable soli
d-state system. One of the long-term challenges for semiconductor qubits i
s to understand\, and control\, the local electromagnetic environment of t
he qubit down to sub 10nm length scales. Scanning probe techniques\, combi
ned with molecular beam epitaxy allow us to engineer fully crystalline dev
ices at the atomic scale and directly probe the qubit wave function with e
xquisite precision. We will discuss the progress and vision for this appro
ach.
DTSTART:20191114T210000Z
DTEND:20191114T220000Z
LAST-MODIFIED:20191018T160001Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/105701
END:VEVENT
BEGIN:VEVENT
UID:94681cd0-0efc-404b-8dbb-fa832855a8fb
DTSTAMP:20191212T085849Z
CREATED:20191108T153002Z
DESCRIPTION:Topic: Probing Near-Horizon Physics via Gravitational Wave Echo
es\n\nSpeaker: Baoyi Chen\, Caltech\n\nBecause of the Black-Hole Informati
on Paradox\, and the singularity\, many physicists believed that GR must b
e modified to incorporate quantum effects\, and that such modifications ma
y affect black-hole spacetimes. The additional near-horizon structure migh
t modify the boundary conditions for incoming gravitational waves\, and le
ad to gravitational wave echoes. These echoes will then become the 'smokin
g gun' of modifications to relativity. Therefore parametrizing gravitation
al echoes and searching for them will be an important way to quantify how
'black' the black holes really are. In this talk\, I will talk about the t
heoretic formulation of gravitational wave echoes\, and point out the curr
ent issues associated with this idea.
DTSTART:20191118T173000Z
DTEND:20191118T183000Z
LAST-MODIFIED:20191112T143002Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/106321
END:VEVENT
BEGIN:VEVENT
UID:e20af988-6f90-4b18-9649-feb05d38ee1d
DTSTAMP:20191212T085849Z
CREATED:20191018T153002Z
DESCRIPTION:Topic: Topic #1: Flows Three Ways\; Topic #2: Deep Learning and
String Theory\n\nSpeaker: Kyle Cranmer\, New York University\, James Halv
erson\, Northeastern University\n\nRegistration for each event is free\, b
ut required. Please click on the registration link below for each date\, a
s it becomes available.\nRegister here:\nhttps://docs.google.com/forms/d/e
/1FAIpQLScD1ZGB17mwhZ3cvyvs8vEqArGJknmcn_udUgL4tJm4DatmUA/viewform Abstrac
t Talk #1: The initial breakthroughs of deep learning came in the form of
predictive tasks such as image classification\, where discriminative model
s were trained with supervised learning algorithms. More recently\, there
have been exciting developments for generative models trained with unsuper
vised learning algorithms. Generative models approximate the distribution
of the data and open up a wider range of possible applications. Generative
Adversarial Networks (GANs) are the most well known of these models\; how
ever\, they have drawbacks. I will describe an alternative approach called
normalizing flows and discuss them in the context of three physics proble
ms: effective field theory measurements at the LHC\, lattice quantum chrom
odynamics\, and modeling the density matrix of a quantum system.Abstract T
alk #2: String theory is a theory of quantum gravity that has had strong i
mpacts on theoretical physics and mathematics. In this talk I will describ
e ways in which deep learning may lead to progress in string theory\, with
a special focus on broad applications in the string theory landscape. Kno
wn properties of the landscape and its relation to computational complexit
y will be briefly discussed\, including ways in which the structure of the
theory allows for the avoidance of worst-case complexity\; for instance\,
networks of extra-dimensional spaces connected by topology changing trans
itions can aid in solving physically relevant Diophantine problems. The ta
lk will focus on two types of problems in string theory. First\, generativ
e models will be discussed as a means for approximating statistical predic
tions\, which are crucial given the large landscape of solutions. As a sim
ple application\, a conditional Wasserstein DCGAN will be used to learn ra
ndom matrix approximations to Kahler metrics on Kahler moduli space\, whic
h are relevant for the physics of axion-like particles. Second\, we will d
iscuss multi-task search problems that arise in the landscape. A reinforce
ment learning A3C agent will be utilized to solve a multi-task problem in
type IIA compactifications on a toroidal orbifold. Significant improvement
over a random walker is achieved\, a known human strategy is learned by t
he agent\, but an RL-discovered strategy performs about twice as well.
DTSTART:20191119T164500Z
DTEND:20191119T200000Z
LAST-MODIFIED:20191104T194501Z
LOCATION:Jadwin Hall\, Room 407
SUMMARY:Deep Learning for Physics
URL:https://www.ias.edu/node/105696
END:VEVENT
BEGIN:VEVENT
UID:cf9c212a-5aa3-4dcd-ae55-ab48e52f94b5
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: Signatures of Mirror Stars\n\nSpeaker: Jack Setford\, Un
iversity of Toronto\n\nMotivated by theories of neutral naturalness\, I wi
ll argue that Mirror Stars are a generic possibility in any hidden sector
with analogues of Standard Model electromagnetism and nuclear physics. I w
ill show that if there exists a tiny kinetic mixing between the dark and S
M photon\, Mirror Stars capture SM matter from the interstellar medium\, w
hich accumulates in the Mirror Star core. This leads to a spectacular and
distinctive signature that could be discovered in optical and X-ray search
es.
DTSTART:20191119T210000Z
DTEND:20191119T220000Z
LAST-MODIFIED:20191108T153002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/104201
END:VEVENT
BEGIN:VEVENT
UID:ae0eb8b7-5d59-4855-9da4-ab9222a74492
DTSTAMP:20191212T085849Z
CREATED:20190819T133002Z
DESCRIPTION:Topic: Integrable Deformations in Quantum Mechanics\, T-Tbar\,
and SYK\n\nSpeaker: Edgar Shaghoulian\, Cornell University\n\nThe Wilsonia
n paradigm suggests universality of quantum field theory in the infrared.
Interestingly\, it also suggests universality of quantum mechanics (d=1 qu
antum field theory) in the ultraviolet. This suggests a study of the lands
cape of the infrared and the robustness of the ultraviolet. I will introdu
ce and solve an infinite class of integrable deformations to quantum mecha
nics\, focusing on a particular deformation inspired by the T-Tbar deforma
tion of two-dimensional quantum field theory. In the context of holography
\, I will show how these deformations modify Jackiw-Teitelboim gravity in
AdS_2. I will also present an equivalent description of the T-Tbar deforma
tion in terms of coupling to worldline gravity. Applications to the Schwar
zian theory and SYK will be discussed.
DTSTART:20191120T210000Z
DTEND:20191120T220000Z
LAST-MODIFIED:20191111T140001Z
LOCATION:Jadwin Hall\, Room A06
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/103111
END:VEVENT
BEGIN:VEVENT
UID:7e47d68b-a83b-451b-b00e-5b293d20a89b
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: The Revolution of Silicon Photonics\n\nSpeaker: Michal L
ipson\, Columbia University\n\nWe are now experiencing a revolution in opt
ical technologies\, where one can print and control massive optical circui
ts\, on a microelectronic chip. This revolution is enabling a whole range
of applications that are in need for scalable optical technologies and it
is opening the door to areas that only a decade ago were unimaginable.In t
he past decade\, the photonic community witnessed a complete transformatio
n of optics. We went from being able to miniaturize a handful of devices t
o being able to define and control the flow of light using thousands of mo
nolithically integrated optical components – all on a silicon chip. The ma
in drive for silicon photonics is the ability to transmit and manipulate u
ltra high bandwidth with low power dissipation. Today there are hundreds o
f products being developed and commercialized towards this goal.The field
of silicon photonics is rapidly evolving and is now enabling completely ne
w applications\, ranging from Lidar to biomedical devices. This is partly
due to the development of novel chip-scale technologies\, novel devices an
d novel materials compatible with silicon photonics. Many of these technol
ogies and devices can manipulate light across the whole VIS\, IR and the M
id IR spectrum. I will discuss these emerging applications\, as well as th
e advancement brought by these novel devices and materials.The key challen
ges of the field relate to the scalability of the systems in bandwidth\, s
ize and power. Some of these challenges are fundamental and require innova
tions that break traditional tradeoffs. Novel approaches for switching\, m
odulating and amplifying light have emerged that can open the door to appl
ications that rely on such scalable systems. I will describe the challenge
s of the field and some of the recent innovations that can potentially add
ress these challenges.
DTSTART:20191121T210000Z
DTEND:20191121T220000Z
LAST-MODIFIED:20191018T160001Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/104206
END:VEVENT
BEGIN:VEVENT
UID:1375b028-4576-41ee-83ed-f8ee0b0258ea
DTSTAMP:20191212T085849Z
CREATED:20190930T180002Z
DESCRIPTION:Topic: The Teukolsky Equations in Kerr-Newman Spacetime\n\nSpea
ker: Elena Giorgi\, Princeton Gravity Initiative\, Princeton University\n
\nThe Kerr-Newman spacetime is the most general explicit black hole soluti
on\, and represents a stationary rotating charged black hole. Its stabilit
y to gravitational and electromagnetic perturbations has eluded a proof si
nce the 80s in the black hole perturbation community. As put by Chandrasek
har\, 'the methods that have proved to be so successful in treating the gr
avitational perturbations of the Kerr spacetime do not seem to be applicab
le for treating the coupled electromagnetic-gravitational perturbations of
the Kerr-Newman spacetime'. He adds\, 'the principle obstacle is in findi
ng separated equations'.\nFollowing the road map that mathematicians have
taken in interpreting in physical space the known mode analysis\, we will
present a way to overcome 'the apparent indissolubility of the coupling be
tween the spin-1 and spin-2 fields in the perturbed spacetime'. We will ex
plain how the decomposition in modes\, done to simplify the analysis of th
e equations\, makes them unsolvable when electromagnetic and gravitational
radiations interact. We instead generalize the Chandrasekhar transformati
on to Kerr-Newman in physical space and use it to obtain a quantitative pr
oof of stability.
DTSTART:20191125T173000Z
DTEND:20191125T183000Z
LAST-MODIFIED:20191119T151502Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105226
END:VEVENT
BEGIN:VEVENT
UID:0e2ff67b-6d3b-49ee-914c-2716cfc69170
DTSTAMP:20191212T085849Z
CREATED:20190816T200002Z
DESCRIPTION:Topic: How Fast is the Universe Growing?\n\nSpeaker: Jo Dunkley
\, Princeton University\n\nThere is currently a (possible) tension between
various measurements of the Hubble expansion rate. I will give a recap of
this issue\, and describe how we use the Cosmic Microwave Background to i
nfer the local expansion rate. I will explain what assumptions we usually
make about the cosmological model in doing so\, and what kinds of early-un
iverse modifications could bring some of the different measurements better
in line. I will talk about new measurements we are making in Chile to imp
rove estimates of the Hubble constant from the CMB\, and to test alternati
ve models.
DTSTART:20191126T210000Z
DTEND:20191126T220000Z
LAST-MODIFIED:20191122T200002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103101
END:VEVENT
BEGIN:VEVENT
UID:4e906366-8309-4e44-b0ea-dedf9feafd18
DTSTAMP:20191212T085849Z
CREATED:20190930T181502Z
DESCRIPTION:Topic: Constraints on Nuclear Physics and Electromagnetic Precu
rsors from Neutron Star Mergers\n\nSpeaker: Elias Most\, CCA\, Flatiron In
stitute\n\nWith the detection of GW170817 we have observed the first multi
-messenger gravitational wave signal from two merging neutron stars. This
signal carried a multitude of information about the underlying equation of
state (EOS) of nuclear matter\, which so far is not known for densities a
bove nuclear saturation. In particular it is not known if exotic states or
even a phase transition to quark matter can occur at densities so extreme
that they cannot be probed by any ground-based experiment. I will show ho
w the information carried in the gravitational wave signal of GW170817 can
be used to constrain the EOS at densities above saturation and what we ca
n learn about the possible existence of phase transitions.I will also comm
ent on how we can improve on those limits with upcoming observations of th
e NICER mission.\nIn the second part of the talk\,I will focus on yet to b
e observed electromagnetic precursor emission from neutron star mergers. T
hese precursors have the potential to provide complementary insights into
the properties of neutron stars\, such as their spins\, which cannot yet b
e reliably extracted from the gravitational wave signal. I will present pr
eliminary results on the interaction of force-free magnetospheres in compa
ct binaries and demonstrate how powerful electromagnetic flares can be lau
nched for a wide variety of orbital parameters.
DTSTART:20191202T173000Z
DTEND:20191202T183000Z
LAST-MODIFIED:20191126T173001Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105231
END:VEVENT
BEGIN:VEVENT
UID:c9da6348-d4c9-422f-8b8a-f317312f2271
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: A CMB Millikan Experiment with Axion Strings\n\nSpeaker:
Prateek Agrawal\, Harvard University\n\nVery light axions are a generic p
rediction of string compactifications. If cosmic strings associated with t
hese axions were produced in the early universe\, they quickly approach a
so-called scaling solution\, such that strings persist in the sky today. I
will present some remarkable signals of such strings coupled to photons.
In this string background\, there is a model-independent polarization rota
tion of CMB photons equal to $\alpha_{em}$ up to a rational number. This m
anifests itself as a rotation of E-modes in the CMB polarization to B-mode
s. The current CMB experimental sensitivity to this rotation is about 1%\,
with many orders of magnitude improvement expected for future experiments
. I will show how measuring the undetermined rational number may shed ligh
t on the quantization of electric charge in the standard model. These stri
ngs may also be visible in strongly lensed quasar systems.
DTSTART:20191203T210000Z
DTEND:20191203T220000Z
LAST-MODIFIED:20191122T200002Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/104211
END:VEVENT
BEGIN:VEVENT
UID:83be06df-7c6f-4bf0-b7df-202d155466a7
DTSTAMP:20191212T085849Z
CREATED:20191127T154501Z
DESCRIPTION:Topic: Driving Down the Cost of Fusion Power Through Technical
Innovation\n\nSpeaker: Steve Cowley\, Princeton Plasma Physics Laboratory
\n\nThe National Academy has recently called for the US to adopt a strateg
y to produce fusion electricity from a compact pilot plant by mid-century.
This approach requires innovations in technology (e.g. magnet systems and
power handling systems) and innovations in physics. I will introduce the
key issues that challenge the current program and recent theoretical and e
xperimental progress. I will also discuss research at PPPL to develop opti
mal three dimensional magnetic configurations and low cost engineering sol
utions for their realization.
DTSTART:20191205T210000Z
DTEND:20191205T220000Z
LAST-MODIFIED:20191127T154501Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/106751
END:VEVENT
BEGIN:VEVENT
UID:24ee1bac-15e9-4dd9-8956-e3707179437f
DTSTAMP:20191212T085849Z
CREATED:20190930T181502Z
DESCRIPTION:Topic: Numerical Methods in General Relativity and the Physics
of Compact Objects\n\nSpeaker: Antonios Tsokaros\, University of Illinois
\n\nEvery astrophysically realistic simulation needs accurate initial data
and in this talk I will present methods to obtain such solutions for a va
riety of problems. In particular I will focus on a new initial data formul
ation to solve the full set of Einstein equations for spacetimes that cont
ain a black hole under general conditions. As an application I will presen
t nonaxisymmetric\, self-gravitating tori in the presence of a black hole
whose spin is tilted with respect to the angular momentum of the disk. The
numerical implementation of these methods is done in the context of the C
ompact Object CALculator (COCAL) code whose purpose is to provide initial
data for any general-relativistic system.\n\nIn the second part of this ta
lk I will address two questions: First\, how one can distinguish a binary
black hole undergoing a merger from a binary neutron star if the individua
l compact companions have masses that fall inside the so-called mass gap o
f 3-5 solar masses? I will show that although the ringdown phase is indist
inguishable from the perturbed Kerr spacetime\, the inspiral phase can lea
d to measurable differences. Second\, whether any of the known neutron sta
rs that exhibit ergoregions are dynamically stable? If not\, can we identi
fy any dynamically stable ergostar? The answer to these questions will hav
e consequences to the conjecture by Komissarov that a horizon is not neces
sary for the energy creation of a relativistic jet.
DTSTART:20191209T173000Z
DTEND:20191209T183000Z
LAST-MODIFIED:20191205T141501Z
LOCATION:Jadwin Hall\, Princeton Gravity Initiative\, 4th Floor
SUMMARY:Gravity Initiative Lunch
URL:https://www.ias.edu/node/105236
END:VEVENT
BEGIN:VEVENT
UID:6fade301-741b-49b6-b8c7-7883bd511e64
DTSTAMP:20191212T085849Z
CREATED:20191209T144501Z
DESCRIPTION:Topic: Ballooning and Experimental Cosmology\n\nSpeaker: Riccar
do Gualtieri\, University of Illinois at Urbana-Champaign\n\nThe Cosmic Mi
crowave Background is a unique tool to investigate the early universe and
the largest structures observable in the sky. The main CMB observables suc
h as anisotropies\, polarization state and Sunyaev Zel’Dovich effect can g
ive us a detailed view of the cosmos providing stringent constraints to th
e parameters of our models. To extract the information encoded in the radi
ation we need extremely sensitive detectors and low noise readout. Transit
ion edge sensors and superconducting quantum interference devices are the
state of the art technology for this purpose. The implementation on presen
t and future balloon borne experiments will be introduced and discussed as
well as the next generation ground experiments.
DTSTART:20191209T183000Z
DTEND:20191209T193000Z
LAST-MODIFIED:20191209T144501Z
LOCATION:Princeton University\, Jadwin Hall\, Room 303
SUMMARY:Princeton University Dicke Candidate Talk - Added
URL:https://www.ias.edu/node/107026
END:VEVENT
BEGIN:VEVENT
UID:d1cd5c26-8537-4b6a-8155-7ef921ae8c06
DTSTAMP:20191212T085849Z
CREATED:20190816T200002Z
DESCRIPTION:Topic: Gamma-ray Observations of M31 and Dark Matter Implicatio
ns\n\nSpeaker: Simona Murgia\, University of California\, Irvine\n\nThe An
dromeda galaxy is the closest spiral galaxy to us. It harbors a massive da
rk matter halo which may span up to ∼600 kpc across and comprises ∼90% of
the galaxy’s total mass. This halo size translates into a large diameter o
f 42 degrees on the sky for an M31–Milky Way distance of 785 kpc\, but its
presumably low surface brightness makes it challenging to detect with gam
ma-ray telescopes. Using data from the Fermi Large Area Telescope\, we mak
e a detailed study of the gamma-ray emission between 1-100 GeV towards And
romeda's outer halo\, and perform an in-depth analysis of the systematic u
ncertainties related to the observations. In this talk\, I will discuss th
ese results and implications for dark matter.
DTSTART:20191210T210000Z
DTEND:20191210T220000Z
LAST-MODIFIED:20191205T150001Z
LOCATION:Jadwin Hall\, Room 303
SUMMARY:Pheno & Vino Seminar
URL:https://www.ias.edu/node/103106
END:VEVENT
BEGIN:VEVENT
UID:11da1e5a-e718-4131-b5fc-fcc46977d8ec
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: Diversity and Memory in Self-Organised Immune Repertoire
s\n\nSpeaker: Thierry Mora\, Ecole Normale Supérieure de Paris\n\nThe immu
ne system is composed of a large number of heterogenous interacting compon
ents that collectively recognize and clear pathogens. To cover the high-di
mensional molecular space of all possible threats\, including those that h
ave never been seen before\, the adaptive immune system is endowed with a
wide variety of receptor proteins\, which are created by random cutting-an
d-pasting of the DNA in each cell. I will show how the rules of that proce
ss can be statistically learned from high-throughput sequencing data\, and
can be used to calculate its entropy and to predict accurately receptor o
verlap between individuals. I will then present a theoretical framework fo
r thinking about optimal designs for enacting and encoding immune memory t
hrough the self-organisation of the repertoire.
DTSTART:20191212T210000Z
DTEND:20191212T220000Z
LAST-MODIFIED:20191127T154501Z
LOCATION:Jadwin Hall\, Room A10
SUMMARY:Hamilton Colloquium Series
URL:https://www.ias.edu/node/104216
END:VEVENT
BEGIN:VEVENT
UID:acf3266e-5a1a-4f15-ae4f-e6a9a50c1071
DTSTAMP:20191212T085849Z
CREATED:20190925T143001Z
DESCRIPTION:Speaker: TBA\n\n
DTSTART:20200211T164500Z
DTEND:20200211T183000Z
LAST-MODIFIED:20190925T151501Z
LOCATION:TBA
SUMMARY:Deep Learning for Physics
URL:https://www.ias.edu/node/104991
END:VEVENT
BEGIN:VEVENT
UID:ca152467-1c41-4ade-8996-2113220a0920
DTSTAMP:20191212T085849Z
CREATED:20190905T154502Z
DESCRIPTION:Topic: The Future of the PLANCK Data\n\n
DTSTART:20200304T130000Z
DTEND:20200304T140000Z
LAST-MODIFIED:20190905T154502Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104221
END:VEVENT
BEGIN:VEVENT
UID:e2c52f50-a07b-4a9f-9d37-f0ddf4367af2
DTSTAMP:20191212T085849Z
CREATED:20190905T160001Z
DESCRIPTION:Topic: The Future of the PLANCK Data\n\n
DTSTART:20200305T130000Z
DTEND:20200305T140000Z
LAST-MODIFIED:20190905T160001Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104231
END:VEVENT
BEGIN:VEVENT
UID:78ec39ad-01cb-4683-8607-f9d35ac5900e
DTSTAMP:20191212T085849Z
CREATED:20190905T160001Z
DESCRIPTION:Topic: The Future of the PLANCK Data\n\n
DTSTART:20200306T130000Z
DTEND:20200306T140000Z
LAST-MODIFIED:20190905T160001Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104236
END:VEVENT
BEGIN:VEVENT
UID:338b553a-c01d-4dcd-8383-3c0473c41a70
DTSTAMP:20191212T085849Z
CREATED:20190925T143001Z
DESCRIPTION:Speaker: TBA\n\n
DTSTART:20200310T154500Z
DTEND:20200310T173000Z
LAST-MODIFIED:20190925T151501Z
LOCATION:TBA
SUMMARY:Deep Learning for Physics
URL:https://www.ias.edu/node/104996
END:VEVENT
BEGIN:VEVENT
UID:e2c9e069-a4b1-49df-aa62-68f165cd5b9d
DTSTAMP:20191212T085849Z
CREATED:20190925T143001Z
DESCRIPTION:Speaker: TBA\n\n
DTSTART:20200407T154500Z
DTEND:20200407T173000Z
LAST-MODIFIED:20190925T151501Z
LOCATION:TBA
SUMMARY:Deep Learning for Physics
URL:https://www.ias.edu/node/105001
END:VEVENT
BEGIN:VEVENT
UID:fec23eb1-9bbc-479a-8d9f-3d8d13fcb88f
DTSTAMP:20191212T085849Z
CREATED:20190905T160001Z
DESCRIPTION:Topic: Exploring Supermassive Black Holes\n\n
DTSTART:20200504T120000Z
DTEND:20200504T130000Z
LAST-MODIFIED:20190905T160001Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104241
END:VEVENT
BEGIN:VEVENT
UID:cc007ea6-56a5-4cb6-ac76-b4ea87b1ab1b
DTSTAMP:20191212T085849Z
CREATED:20190905T160001Z
DESCRIPTION:Topic: Exploring Supermassive Black Holes\n\n
DTSTART:20200505T120000Z
DTEND:20200505T130000Z
LAST-MODIFIED:20190905T160001Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104246
END:VEVENT
BEGIN:VEVENT
UID:55b53fdb-e503-42bd-8d2e-b427aa2b0446
DTSTAMP:20191212T085849Z
CREATED:20190905T160001Z
DESCRIPTION:Topic: Exploring Supermassive Black Holes\n\n
DTSTART:20200506T120000Z
DTEND:20200506T130000Z
LAST-MODIFIED:20190905T160001Z
LOCATION:Jadwin Hall\, PCTS Seminar Room\, 4th Floor
SUMMARY:Gravity Initiative Workshop
URL:https://www.ias.edu/node/104251
END:VEVENT
END:VCALENDAR