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UID:35396661-3962-4564-b634-613232633465
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X-WR-CALNAME:IAS Physics-external
BEGIN:VEVENT
UID:63613066-6435-4462-a635-653839313036
DTSTAMP:20231205T123903Z
CREATED:20230901T173102Z
DESCRIPTION:Topic: TBA
DTSTART:20230905T200000Z
DTEND:20230905T210000Z
LAST-MODIFIED:20230901T173618Z
LOCATION:Jadwin Hall\, Joe Henry Room
SUMMARY:Princeton University Dark Cosmos Seminar
URL:https://www.ias.edu/sns/events/princeton-university-dark-cosmos-seminar
-10
END:VEVENT
BEGIN:VEVENT
UID:38313130-6164-4731-b630-386536656336
DTSTAMP:20231205T123903Z
CREATED:20230728T192359Z
DESCRIPTION:Topic: Interacting Fixed Points without Conformal Invariance\n
\nSpeakers: Slava Rychkov\n\nABSTRACT: I will start with some comments abo
ut the theoretical and\nexperimental status of conformal invariance in cri
tical phenomena\,\nfirst proposed by A. Polyakov in 1970. I will then focu
s on a couple\nof experimentally significant models of statistical physics
\n(ferromagnets in presence of strong dipolar forces\, fluctuating\nmembra
nes). Surprisingly\, their fixed points violate the common lore\nthat scal
e invariance implies conformal invariance. How do these\nmodels manage to
do so? Why is the virial current not renormalized? A\nshift symmetry will
help to answer these questions.\n\n
DTSTART:20230908T150000Z
DTEND:20230908T161500Z
LAST-MODIFIED:20230908T131118Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:PU High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/pu-high-energy-theory-seminar-44
END:VEVENT
BEGIN:VEVENT
UID:30353830-6261-4366-b464-646362613762
DTSTAMP:20231205T123903Z
CREATED:20230908T165309Z
DESCRIPTION:Topic: Leading order corrections to the quantum extremal surfac
e formula\n\nSpeakers: Chris Akers\n\nABSTRACT: The quantum extremal surfa
ce (QES) formula is an important\ntool for computing entropy in gravity. F
or a while\, the lore was that\nthis formula offers a good approximation w
henever the state is\nsufficiently semiclassical\, i.e. well-described by
quantum fields on a\ncurved background. This talk will discuss two papers:
in the first\n[https://arxiv.org/abs/2008.03319]\, we demonstrate that th
is lore is\nincorrect and offer a simple replacement. In the second\n[http
s://arxiv.org/abs/2307.13032]\, we generalize our replacement to\narbitrar
y spacetimes.
DTSTART:20230911T163000Z
DTEND:20230911T173000Z
LAST-MODIFIED:20230908T191217Z
LOCATION:Princeton University\, Jadwin Hall\, Princeton Gravity Initiative\
, 4th Floor
SUMMARY:Princeton University Gravity Initiative Seminar Series
URL:https://www.ias.edu/sns/events/princeton-university-gravity-initiative-
seminar-series
END:VEVENT
BEGIN:VEVENT
UID:32653534-3164-4634-b733-353931316163
DTSTAMP:20231205T123903Z
CREATED:20230908T165420Z
DESCRIPTION:Topic: Tower of States and Black Holes\n\nSpeakers: Alex Bedroy
a\n\nABSTRACT: The towers of massive states in quantum gravity are\nubiqui
tous and highly constrained. I will review some of the Swampland\nconjectu
res\, known as distance conjectures\, that quantify the\nuniversal behavio
rs of such towers in string theory. Due to the strong\nimplications of dis
tance conjectures\, connecting them to more\nfundamental principles withou
t relying on string theory examples is\nessential. In this talk\, I will d
iscuss how these conjectures relate\nto black hole thermodynamics.
DTSTART:20230918T163000Z
DTEND:20230918T173000Z
LAST-MODIFIED:20230913T150806Z
LOCATION:Princeton University\, Jadwin Hall\, Princeton Gravity Initiative\
, 4th Floor
SUMMARY:Princeton University Gravity Initiative Seminar Series
URL:https://www.ias.edu/sns/events/princeton-university-gravity-initiative-
seminar-series-0
END:VEVENT
BEGIN:VEVENT
UID:65643239-3836-4262-b430-323365333538
DTSTAMP:20231205T123903Z
CREATED:20230728T183523Z
DESCRIPTION:Topic: Three Perspectives on Two Throats\n\nSpeakers: Christian
Ferko\n\nABSTRACT: For certain black hole spacetimes\, we are fortunate t
o have\nthree complementary views of the same physics: (1) the low-energy
\ngravity theory on the spacetime M\, (2) worldsheet string theory with\nt
arget space M\, and (3) a holographic description living on the\nboundary
of M. In this talk\, I describe ongoing efforts to compare\nthese perspect
ives in the context of two throat regions in such\nspacetimes. The first i
s the linear dilaton throat of solutions\ninvolving strings and NS5-branes
\, which is related to a T \bar{T}-like\ndeformation of the dual CFT\; her
e I describe new results from the\ngravity description. I will also mentio
n work in progress on the D1-D5\nsystem with a spacetime B-field\, whose h
olographic dual involves a\nnon-commutative open string theory. The second
is the near-horizon\nAdS_2 throat of a near-extremal black hole\, whose d
ynamics are\ncontrolled by the Schwarzian mode\; here I describe new resul
ts from\nthe worldsheet description.
DTSTART:20230918T183000Z
DTEND:20230918T193000Z
LAST-MODIFIED:20230918T131240Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:PU High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/pu-high-energy-theory-seminar-37
END:VEVENT
BEGIN:VEVENT
UID:38333931-3331-4931-b439-326661643539
DTSTAMP:20231205T123903Z
CREATED:20230908T132838Z
DESCRIPTION:Topic: RG Flows on Two-Dimensional Spherical Defects\n\nSpeaker
s: Tom Shachar\n\nABSTRACT: The irreversibility of RG flows on conformal d
efects has\nbeen a subject of great interest recently. In this talk I will
present\nan entropy function defined on 2D spherical defects\, interpolat
ing\nbetween the defect anomaly coefficient at the fixed points. We\nrepro
duce the IR sum-rule proving irreversibility and show that the\nfunction i
s perturbatively monotonically decreasing. We consider an\ninteresting phy
sically relevant example using self-adjoint extension\,\nproviding importa
nt information beyond the epsilon expansion.
DTSTART:20230919T180000Z
DTEND:20230919T190000Z
LAST-MODIFIED:20230908T133413Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:PU High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/pu-high-energy-theory-seminar-63
END:VEVENT
BEGIN:VEVENT
UID:63373065-6230-4362-b365-643137633235
DTSTAMP:20231205T123903Z
CREATED:20230918T131408Z
DESCRIPTION:Topic: Precision holography for (non-)susy observables\n\nSpeak
ers: Valentin Reys\n\nABSTRACT: I will review recent progress in understan
ding perturbative\ncorrections to the large N limit of various observables
in holographic\n3d SCFTs. For supersymmetric observables\, these correcti
ons are\nobtained from supersymmetric localization and can be used to infe
r the\nvalue of higher-derivative couplings in the dual gravitational theo
ry.\nThis form of 'precision holography' is useful to shed light on the\ns
tructure of string/M-theory beyond the two-derivative supergravity\nlimit.
I will also discuss applications to non-supersymmetric\nobservables\, whe
re bulk results can be used to make new predictions\nfor thermal observabl
es beyond the strict large N limit. Interesting\nstructures and relations
appear in the thermal context\, which I will\nhighlight.
DTSTART:20230922T150000Z
DTEND:20230922T161500Z
LAST-MODIFIED:20230918T131554Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:PU High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/pu-high-energy-theory-seminar-45
END:VEVENT
BEGIN:VEVENT
UID:35353336-3962-4661-b863-366533386135
DTSTAMP:20231205T123903Z
CREATED:20230908T165504Z
DESCRIPTION:Topic: w(1+infinity) Symmetry in 4D Gravitational Scattering\n
\nSpeakers: Elizabeth Himwich\n\nABSTRACT: In four-dimensional asymptotica
lly flat spacetimes\, the\ninfinite tower of soft graviton modes is known
to generate a\nw(1+infinity) symmetry algebra at tree-level. In this talk
\, I will\nreview this symmetry and demonstrate that it acts non-trivially
on\nmassive scalar particles. The symmetry action is derived from\nprevi
ously-discovered soft graviton theorems\, which characterize\nuniversal be
havior of gravitational scattering amplitudes. I will\npresent a generali
zation of earlier analyses that were formerly\nspecifically tailored to th
e scattering of massless particles. These\nresults clarify that w(1+infin
ity) is a universal feature of\ntree-level gravitational scattering in fou
r-dimensional asymptotically\nflat spacetimes and originates from minimall
y-coupled gravitational\ninteractions.
DTSTART:20230925T163000Z
DTEND:20230925T173000Z
LAST-MODIFIED:20230920T185545Z
LOCATION:Princeton University\, Jadwin Hall\, Princeton Gravity Initiative\
, 4th Floor
SUMMARY:Princeton University Gravity Initiative Seminar Series
URL:https://www.ias.edu/sns/events/princeton-university-gravity-initiative-
seminar-series-1
END:VEVENT
BEGIN:VEVENT
UID:66613561-3863-4236-b866-633165623665
DTSTAMP:20231205T123903Z
CREATED:20230922T191920Z
DESCRIPTION:Topic: Maximizing discovery potential: Searches for long-lived
dark matter with the CMS detector\n\nSpeakers: Allison Hall\n\nThe CMS and
ATLAS experiments at the CERN LHC have the unique\npotential to (possibly
) directly produce dark matter in proton-proton\ncollisions and study its
properties. Many searches for dark matter\nhave been carried out\, mostly
focused on Mono-X signatures with\n'missing' transverse momentum. These se
arches\, however\, have so far\nnot observed any evidence for dark matter
and are setting increasingly\nstringent limits on the allowed dark matter
mass and cross section. In\nthis talk\, I will describe the current CMS da
rk matter search program\,\nincluding searches for long-lived dark matter
particles that travel\nsome macroscopic distance before decaying within th
e CMS detector. In\nparticular\, I will present a recent CMS search for an
inelastic dark\nmatter model in a final state with a pair of collinear\,
displaced\nmuons and missing transverse momentum.
DTSTART:20230926T200000Z
DTEND:20230926T210000Z
LAST-MODIFIED:20230922T192032Z
LOCATION:Jadwin Hall\, Joe Henry Room
SUMMARY:Princeton University Dark Cosmos Seminar
URL:https://www.ias.edu/sns/events/princeton-university-dark-cosmos-seminar
-18
END:VEVENT
BEGIN:VEVENT
UID:37303032-6536-4239-b962-616464633731
DTSTAMP:20231205T123903Z
CREATED:20230728T192838Z
DESCRIPTION:Topic: Two approaches to adjoint QCD_2\n\nSpeakers: Silviu Pufu
\n\nABSTRACT: In this talk\, I will discuss the 2d SU(N) gauge theory\nco
upled to an adjoint Majorana fermion using two approaches. First\,\nI wil
l describe the computation of the spectrum at finite N using\nDiscretized
Light-Cone Quantization. Then\, for the N=2 case\, I will\nintroduce a Ha
miltonian lattice model that can also be used to compute\nthe spectrum as
well as other observables using analytical and\nnumerical techniques.
DTSTART:20230929T150000Z
DTEND:20230929T161500Z
LAST-MODIFIED:20230925T133129Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:PU High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/pu-high-energy-theory-seminar-46
END:VEVENT
BEGIN:VEVENT
UID:37386433-6364-4565-b665-623431316430
DTSTAMP:20231205T123903Z
CREATED:20230922T181911Z
DESCRIPTION:Topic: What’s Inside a Black Hole \n\nSpeakers: Ram Brustein\n
\nABSTRACT: I will present general arguments\, based on fundamental\nphysi
cs principles\, as to why we should expect a significant\, horizon\nscale\
, departure from semiclassical gravity inside astrophysical black\nholes.
Then\, I will present a simple model which realizes this idea:\nthe frozen
star model. I will show that a static frozen star looks\nexactly like a S
chwarzschild black hole to an external observer\,\nthen I will present th
e rotating frozen star and show that it looks\nexactly like a Kerr black h
ole. I will end by discussing the stability\nand the spectrum of internal
modes of the frozen stars and show that\nthey possess an interesting spect
rum of non-relativistic modes.
DTSTART:20231002T163000Z
DTEND:20231002T173000Z
LAST-MODIFIED:20230922T182136Z
LOCATION:Princeton University\, Jadwin Hall\, Princeton Gravity Initiative\
, 4th Floor & Zoom
SUMMARY:Princeton University Gravity Initiative Seminar Series
URL:https://www.ias.edu/sns/events/princeton-university-gravity-initiative-
seminar-series-5
END:VEVENT
BEGIN:VEVENT
UID:61643264-3633-4433-b933-643135383261
DTSTAMP:20231205T123903Z
CREATED:20230728T184015Z
DESCRIPTION:Topic: Symmetry Resolution at High Energy\n\nSpeakers: Hirosi O
oguri\n\nABSTRACT: The density of states of a unitary conformal field theo
ry\nis known to have a universal behavior at high energy. In two\ndimensio
ns\, this behavior is described by the Cardy formula. If the\ntheory has s
ymmetry\, it is interesting to understand the symmetry\nresolution\, namel
y the decomposition of its Hilbert space into\nirreducible representations
of the symmetry. In this talk\, I will\npresent universal formulas for th
e symmetry resolution with respect to\nboth internal global symmetry and s
pacetime symmetry. I will also\ndiscuss the entanglement entropy\, the ent
anglement spectra\, and the\nhigh energy properties of the three-point fun
ctions. The formulas are\nderived by using thermal effective field theory
and are applicable to\nany unitary conformal field theory in arbitrary spa
cetime\ndimensions.
DTSTART:20231002T183000Z
DTEND:20231002T193000Z
LAST-MODIFIED:20230929T125727Z
LOCATION:Wolfensohn Hall & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-79
END:VEVENT
BEGIN:VEVENT
UID:38366462-6231-4164-b730-346231653937
DTSTAMP:20231205T123903Z
CREATED:20230922T143418Z
DESCRIPTION:Topic: Probing Exotic Energy Injection with the CMB and Early S
tar Formation\n\nSpeakers: Wenzer Qin\n\nDark matter interactions with Sta
ndard Model particles can inject\nenergy at early times\, altering the sta
ndard evolution of the early\nuniverse. In particular\, this energy inject
ion can perturb the\nspectrum of the cosmic microwave background (CMB) awa
y from that of a\nperfect blackbody\, alter the CMB anisotropy spectrum\,
and affect\nprocesses by which the first stars form. For this study\, I wi
ll\ndiscuss recent work to upgrade the DarkHistory code package to more\nc
arefully track interactions among low energy electrons\, hydrogen\natoms\,
and radiation\, in order to accurately compute the evolution of\nthe CMB
spectral distortion in the presence of Dark Matter energy\ninjection. I wi
ll show results for the contribution to the spectral\ndistortions from red
shifts z < 3000 for arbitrary energy injection\nscenarios\, new CMB anisot
ropy constraints on light dark matter\, as\nwell as the effect of exotic e
nergy injection on early star formation.
DTSTART:20231003T200000Z
DTEND:20231003T210000Z
LAST-MODIFIED:20230929T160607Z
LOCATION:Jadwin Hall\, Joe Henry Room
SUMMARY:Princeton University Dark Cosmos Seminar
URL:https://www.ias.edu/sns/events/princeton-university-dark-cosmos-seminar
-11
END:VEVENT
BEGIN:VEVENT
UID:38326362-3839-4033-a336-396363633634
DTSTAMP:20231205T123903Z
CREATED:20230829T163930Z
DESCRIPTION:Topic: Neural signal propagation atlas of C. elegans\n\nSpeaker
s: Andy Leifer\n\nABSTRACT: Both physics and neuroscience seek to understa
nd how the\nedges and nodes of a network dictate its function. But until r
ecently\,\nit was not possible to quantitatively explore the relation betw
een the\nstructure and function of a biological neural network at brain sc
ale\nand cellular resolution because no single brain had both a complete\n
neuroanatomical map\, called a connectome\, and corresponding\nmeasurement
s of signal propagation with which to compare. To close\nthis gap\, we rec
ently performed the first direct measurements of\nsignal propagation at br
ain scale and cellular resolution in the\nnematode Caenorhabditis elegans
by optically activating each neuron in\nthe network\, one at a time\, and
measuring the network’s response.\nThese pump-probe style measurements rev
eal that neural signals often\ntravel through the network in ways that are
unexpected from wiring\nalone. For example\, we measured a form of wirele
ss signaling\,\nextrasynaptic peptidergic signaling\, that contributes to
neural\ndynamics even though it is not visible from anatomy. These\nmeasur
ements\, in combination with others from our group\, are helping\nto revea
l how neural network dynamics process sensory information and\ngenerate ac
tions.
DTSTART:20231005T200000Z
DTEND:20231005T210000Z
LAST-MODIFIED:20230929T162047Z
LOCATION:Jadwin Hall A-10
SUMMARY:Princeton University Donald R. Hamilton Colloquium Series
URL:https://www.ias.edu/sns/events/princeton-university-donald-r-hamilton-c
olloquium-series-8
END:VEVENT
BEGIN:VEVENT
UID:34333237-3532-4435-b261-306162666438
DTSTAMP:20231205T123903Z
CREATED:20230908T165549Z
DESCRIPTION:Topic: Bosonic Fields in Strong-Field Gravity\n\nSpeakers: Nils
Siemonsen\n\nABSTRACT: Gravitational wave and electromagnetic observation
s of\nstrongly gravitating systems allow us not only to probe black holes
\nand neutron stars\, but also have the potential to uncover new\nfundamen
tal physics. Superradiant bosonic clouds and boson stars are\nunique probe
s of new ultralight weakly-coupled scalar\, vector\, and\nspin-2 particles
\, as well as ultracompact and black hole mimicking\nobjects. I will discu
ss the dynamics of these systems\, the observable\ngravitational and elect
romagnetic signatures\, and illustrate possible\ndetection strategies.
DTSTART:20231009T163000Z
DTEND:20231009T173000Z
LAST-MODIFIED:20231005T150104Z
LOCATION:Princeton University\, Jadwin Hall\, Princeton Gravity Initiative\
, 4th Floor & Zoom
SUMMARY:Princeton University Gravity Initiative Seminar Series
URL:https://www.ias.edu/sns/events/princeton-university-gravity-initiative-
seminar-series-2
END:VEVENT
BEGIN:VEVENT
UID:30363832-3838-4037-a335-323237626630
DTSTAMP:20231205T123903Z
CREATED:20230714T181556Z
DESCRIPTION:Topic: Nonlinear Aspects of General Relativity\n\nFree\, but re
quired registration [https://forms.gle/7yGBaurH6J62rrag7]\nis now open. Sp
ace is limited so please register promptly. The\nDEADLINE FOR REGISTRATION
IS AUGUST 1. \n\nClick here https://forms.gle/7yGBaurH6J62rrag7\n\nDetail
s can be found on the website at Princeton Center for\nTheoretical Science
[https://pcts.princeton.edu/]\n\nPLEASE NOTE: This workshop is not open t
o the general public\, but\nonly to active researchers.\n\nORGANIZERS: Ale
jandro Cárdenas-Avendaño (Princeton Univ.)\, Macarena\nLagos (Columbia Uni
v) Adam Pound (Univ. of Southampton)\, Igor\nRodnianski (Princeton Univ.)\
, Gautam Satishchandran (Princeton Univ.)\,\nLeo Stein (Univ. of Mississip
pi)\, Rita Teixeira da Costa (Princeton\nUniv.)\, Niels Warburton (Univ. C
ollege Dublin) \n\nDescription: Einstein’s theory of General Relativity is
a well-posed\ntheory of gravity from which one should be able to extract
predictions\nfor the evolution of any suitable initial configuration. Extr
acting\nconcrete predictions can be extremely challenging in practice\, ma
inly\ndue to the nonlinear character of the Einstein equations. \n\nThis w
orkshop aims to bring together a diverse group of researchers\nfrom astrop
hysics\, physics and mathematics backgrounds to share ideas\nand explore m
ulti-disciplinary strategies for tackling the nonlinear\naspects of Genera
l Relativity. These issues range from black hole\nmergers/ringdown\, and g
ravitational self-force to cosmic censorship\nand the stability of black h
oles.
DTSTART:20231010T123000Z
DTEND:20231010T210000Z
LAST-MODIFIED:20230714T182048Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:Princeton University PCTS Workshop
URL:https://www.ias.edu/sns/events/princeton-university-pcts-workshop-2
END:VEVENT
BEGIN:VEVENT
UID:38326432-3663-4634-b664-303335363534
DTSTAMP:20231205T123903Z
CREATED:20230714T182121Z
DESCRIPTION:Topic: Nonlinear Aspects of General Relativity\n\nFree\, but re
quired registration [https://forms.gle/7yGBaurH6J62rrag7]\nis now open. Sp
ace is limited so please register promptly. The\nDEADLINE FOR REGISTRATION
IS AUGUST 1. \n\nClick here https://forms.gle/7yGBaurH6J62rrag7\n\nDetail
s can be found on the website at Princeton Center for\nTheoretical Science
[https://pcts.princeton.edu/]\n\nPLEASE NOTE: This workshop is not open t
o the general public\, but\nonly to active researchers.\n\nORGANIZERS: Ale
jandro Cárdenas-Avendaño (Princeton Univ.)\, Macarena\nLagos (Columbia Uni
v) Adam Pound (Univ. of Southampton)\, Igor\nRodnianski (Princeton Univ.)\
, Gautam Satishchandran (Princeton Univ.)\,\nLeo Stein (Univ. of Mississip
pi)\, Rita Teixeira da Costa (Princeton\nUniv.)\, Niels Warburton (Univ. C
ollege Dublin) \n\nDescription: Einstein’s theory of General Relativity is
a well-posed\ntheory of gravity from which one should be able to extract
predictions\nfor the evolution of any suitable initial configuration. Extr
acting\nconcrete predictions can be extremely challenging in practice\, ma
inly\ndue to the nonlinear character of the Einstein equations. \n\nThis w
orkshop aims to bring together a diverse group of researchers\nfrom astrop
hysics\, physics and mathematics backgrounds to share ideas\nand explore m
ulti-disciplinary strategies for tackling the nonlinear\naspects of Genera
l Relativity. These issues range from black hole\nmergers/ringdown\, and g
ravitational self-force to cosmic censorship\nand the stability of black h
oles.
DTSTART:20231011T123000Z
DTEND:20231011T210000Z
LAST-MODIFIED:20230714T182141Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:Princeton University PCTS Workshop
URL:https://www.ias.edu/sns/events/princeton-university-pcts-workshop-3
END:VEVENT
BEGIN:VEVENT
UID:36306637-3961-4364-b066-313431353662
DTSTAMP:20231205T123903Z
CREATED:20230714T182146Z
DESCRIPTION:Topic: Nonlinear Aspects of General Relativity\n\nFree\, but re
quired registration [https://forms.gle/7yGBaurH6J62rrag7]\nis now open. Sp
ace is limited so please register promptly. The\nDEADLINE FOR REGISTRATION
IS AUGUST 1. \n\nClick here https://forms.gle/7yGBaurH6J62rrag7\n\nDetail
s can be found on the website at Princeton Center for\nTheoretical Science
[https://pcts.princeton.edu/]\n\nPLEASE NOTE: This workshop is not open t
o the general public\, but\nonly to active researchers.\n\nORGANIZERS: Ale
jandro Cárdenas-Avendaño (Princeton Univ.)\, Macarena\nLagos (Columbia Uni
v) Adam Pound (Univ. of Southampton)\, Igor\nRodnianski (Princeton Univ.)\
, Gautam Satishchandran (Princeton Univ.)\,\nLeo Stein (Univ. of Mississip
pi)\, Rita Teixeira da Costa (Princeton\nUniv.)\, Niels Warburton (Univ. C
ollege Dublin) \n\nDescription: Einstein’s theory of General Relativity is
a well-posed\ntheory of gravity from which one should be able to extract
predictions\nfor the evolution of any suitable initial configuration. Extr
acting\nconcrete predictions can be extremely challenging in practice\, ma
inly\ndue to the nonlinear character of the Einstein equations. \n\nThis w
orkshop aims to bring together a diverse group of researchers\nfrom astrop
hysics\, physics and mathematics backgrounds to share ideas\nand explore m
ulti-disciplinary strategies for tackling the nonlinear\naspects of Genera
l Relativity. These issues range from black hole\nmergers/ringdown\, and g
ravitational self-force to cosmic censorship\nand the stability of black h
oles.
DTSTART:20231012T123000Z
DTEND:20231012T210000Z
LAST-MODIFIED:20230714T182203Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:Princeton University PCTS Workshop
URL:https://www.ias.edu/sns/events/princeton-university-pcts-workshop-4
END:VEVENT
BEGIN:VEVENT
UID:35323337-3065-4363-b066-663838626161
DTSTAMP:20231205T123903Z
CREATED:20231002T162337Z
DESCRIPTION:Topic: Creases and caustics on black hole event horizons\n\nSpe
akers: Harvey Reall\n\nABSTRACT: The existence of an event horizon is the
defining property\nof a black hole. I shall review the properties of event
horizons and\ndiscuss various examples demonstrating that event horizons
are not\nsmooth in dynamical processes such as black hole formation or mer
ger.\nI shall explain how non-smooth features of an event horizon can be\n
classified into various types\, such as creases and caustics. I shall\ncla
ssify ``perestroikas'' of these structures\, in which they undergo a\nqual
itative change at an instant of time. A crease perestroika gives\nan exact
local description of the event horizon near the ``instant of\nmerger'' of
a black hole merger. Other crease perestroikas describe\nevent horizon nu
cleation or collapse of a hole in a toroidal horizon.\nCaustic perestroika
s provide a mechanism for smoothing the horizon. I\nshall suggest that cre
ases make a contribution to black hole entropy.
DTSTART:20231012T200000Z
DTEND:20231012T210000Z
LAST-MODIFIED:20231002T162514Z
LOCATION:Jadwin Hall A-10
SUMMARY:Princeton University Donald R. Hamilton Colloquium Series
URL:https://www.ias.edu/sns/events/princeton-university-donald-r-hamilton-c
olloquium-series-13
END:VEVENT
BEGIN:VEVENT
UID:35666436-6263-4464-a437-313164666664
DTSTAMP:20231205T123903Z
CREATED:20230714T182208Z
DESCRIPTION:Topic: Nonlinear Aspects of General Relativity\n\nFree\, but re
quired registration [https://forms.gle/7yGBaurH6J62rrag7]\nis now open. Sp
ace is limited so please register promptly. The\nDEADLINE FOR REGISTRATION
IS AUGUST 1. \n\nClick here https://forms.gle/7yGBaurH6J62rrag7\n\nDetail
s can be found on the website at Princeton Center for\nTheoretical Science
[https://pcts.princeton.edu/]\n\nPLEASE NOTE: This workshop is not open t
o the general public\, but\nonly to active researchers.\n\nORGANIZERS: Ale
jandro Cárdenas-Avendaño (Princeton Univ.)\, Macarena\nLagos (Columbia Uni
v) Adam Pound (Univ. of Southampton)\, Igor\nRodnianski (Princeton Univ.)\
, Gautam Satishchandran (Princeton Univ.)\,\nLeo Stein (Univ. of Mississip
pi)\, Rita Teixeira da Costa (Princeton\nUniv.)\, Niels Warburton (Univ. C
ollege Dublin) \n\nDescription: Einstein’s theory of General Relativity is
a well-posed\ntheory of gravity from which one should be able to extract
predictions\nfor the evolution of any suitable initial configuration. Extr
acting\nconcrete predictions can be extremely challenging in practice\, ma
inly\ndue to the nonlinear character of the Einstein equations. \n\nThis w
orkshop aims to bring together a diverse group of researchers\nfrom astrop
hysics\, physics and mathematics backgrounds to share ideas\nand explore m
ulti-disciplinary strategies for tackling the nonlinear\naspects of Genera
l Relativity. These issues range from black hole\nmergers/ringdown\, and g
ravitational self-force to cosmic censorship\nand the stability of black h
oles.
DTSTART:20231013T123000Z
DTEND:20231013T210000Z
LAST-MODIFIED:20230714T182230Z
LOCATION:Jadwin Hall\, PCTS Room 407
SUMMARY:Princeton University PCTS Workshop
URL:https://www.ias.edu/sns/events/princeton-university-pcts-workshop-5
END:VEVENT
BEGIN:VEVENT
UID:61666434-3963-4639-a432-346136303263
DTSTAMP:20231205T123903Z
CREATED:20230922T143442Z
DESCRIPTION:Topic: Probing Dark Matter with Pulsar Timing Arrays and Gravit
ational Wave Detectors\n\nSpeakers: Vincent Lee\n\nPulsar timing arrays {P
TAs) and gravitational wave detectors can serve\nas valuable tools in the
detection of dark matter. Dark matter\nsubstructure within the Milky Way G
alaxy can induce gravitational\npulls on pulsars\, leading to observable d
eviations in pulsar timings.\nWe demonstrate that dark matter models predi
cting enhanced power on\nsmall scales {