Simons Collaboration Workshop on Celestial Holography

About the workshop

Celestial holography

Three weeks at Harvard devoted to celestial holography.

The Simons Collaboration Workshop on Celestial Holography will bring together researchers working on celestial holography, asymptotic symmetries, gravitational scattering, infrared physics, and related aspects of quantum gravity.

The workshop is designed to encourage extended discussion and collaboration alongside a programme of research talks.

Part of the Simons Collaboration on Celestial Holography ↗

Schedule

Week 1 October 19–23, 2026

Monday October 19

9:30–10:00Abhay AshtekarHorizons and Null Infinity: An unforeseen interplay between geometry and physicsSlides ↗J453

10:15–10:45Laura DonnayBMS ParticlesSlides ↗J453

12:00–12:30Francisco RojasToward Celestial QED: An exploration from subleading virtual photonsSlides ↗L425

Tuesday October 20

9:30–10:00Fernando AldayOn String Amplitudes on Curved BackgroundsJ453

10:15–10:45Dionysios AnninosComments on gravity with finite boundariesJ453

11:00–11:30Sam GrallaThree Easy Pieces for Near-horizon SymmetryJ453

12:30–13:00Alfredo GuevaraGluons and KnotsGroup Lunch, J368

Wednesday October 21

9:30–10:00Per KrausEnhanced Correlations in Hawking Radiation from Near-Extremal CollapseSlides ↗J453

10:15–10:45Jan de BoerCelestial Carroll theoryJ453

11:00–11:30Kévin NguyenHilbert space in the flat limit of AdS/CFTJ453

13:00–13:30Tom WetzsteinThe Holographic Carroll-Weyl AnomalyL425

Thursday October 22

9:30–10:00Suvrat RajuSeeing Page curves with blinders onJ453

10:15–10:45Miguel CampigliaPeeling violation in gravitational scatteringJ453

11:00–11:30Arthur LipsteinDecompactification and the Flat-Space Limit of AdS5/CFT4J453

16:00–16:30Juan MaldacenaSingle minus amplitudes from the matrix model in M-theoryJ453

18:00–21:00Workshop DinnerSeason to Taste

Friday October 23

9:30–10:00Wei SongCarrollian Thirring modelJ356

10:15–10:45Aron WallNull holography must break symmetriesJ356

11:00–11:30Temple HeFrom finite subregions to asymptotically flat gravityJ356

Week 2 October 26–30, 2026

Monday October 26

9:15–9:45Bernardo AranedaOn Euclidean black holesJ453

10:00–10:30Noah MillerCFT₄'s and CCFT₂ (a slight free association)Slides ↗J453

11:00–12:00Tim AdamoBlack holes in twistor spaceBHI Colloquium

Tuesday October 27

9:30–10:00Marc GeillerAsymptotically-FLRW SpacetimesJ453

10:15–10:45Hare KrishnaDirichlet gravitons in AdS₄ and the wedge algebra of ℒ_Λ w_1+∞Slides ↗J453

12:00–13:00Daniel GrumillerUnitary quantum conformal Bondi-Metzner-Sachs field theoriesSlides ↗Group Lunch, J368

Wednesday October 28

9:30–10:00Jelle HartongBoundary Energy-Momentum Tensor, BMS Charges and the Gravitational Phase SpaceJ453

10:15–10:45Biswajit SahooLogarithmic Soft Theorem in Higher DimensionsSlides ↗J453

11:00–11:30Mina HimwichLorentz primary classification of 4D detector operatorsJ453

13:00–13:30Prahar MitraBulk Wilson Loops from the BoundaryL425

Thursday October 29

9:30–10:00Edward MazencFinite-dimensional HolographySlides ↗J453

10:15–10:45Eduardo CasaliHolographic duals to integrable deformations of self-dual N = 4 SYMJ453

11:00–11:30Federico CaponeGKPW-like dictionary and Hamilton-Jacobi methods in flat holographyJ453

16:00–16:30Malcolm PerryBuilding KerrJ453

18:00–21:00Workshop DinnerCharles River Cruise

Friday October 30

9:30–10:00Diksha JainEntropy of near-extremal and near-BPS black holes in AdS₃ supergravityJ356

10:15–10:45Rajesh GopakumarWorldsheet Duals for Matrix ModelsJ356

11:00–11:30Monica PateCelestial multipolesJ356

Week 3 November 2–6, 2026

Monday November 2

9:45–10:15Marika TaylorHolography for anisotropic degenerate boundariesBHI G10

11:00–12:00Geoffrey CompereBinary Black Hole Waveforms in the Era of Gravitational-Wave Precision PhysicsBHI Colloquium

16:30–17:30Kathryn Zurek (canceled)Quantum Diamonds and InterferometersPhysics Colloquium, J250

Tuesday November 3

9:30–10:00Glenn BarnichNotes on non-equilibrium thermodynamics of Robinson-Trautman wavesJ453

10:15–10:45Sruthi NarayananPuzzles with Soft Towers in Momentum SpaceJ453

12:00–13:00Kostas SkenderisThe quantum AdS/CFT correspondence and its flat space limitGroup Lunch, J368

Wednesday November 4

9:30–10:00Evgeny SkvortsovTowards AdS/CFT and celestial holography for self-dual (higher-spin) theoriesJ453

10:15–10:45Ana-Maria RaclariuTaylor-Zhu OPE from the algebra of higher-spin charges in 4d (A)dS gravityJ453

11:00–11:30Marios PetropoulosThe Cotton againJ453

Thursday November 5

9:30–10:00Robert WaldAlternative Boundary Conditions in Asymptotically Anti-de Sitter SpacetimesJ453

10:15–10:45Stephan StiebergerOn Positive Celestial Geometry and Carrollian String WorldsheetsJ453

11:00–11:30Adam KmecAdS₄ celestial symmetries from ambitwistorsJ453

18:00–21:00Workshop DinnerCharles River Cruise

Friday November 6

Confirmed participants

Participant

Dates

Tim Adamo

Oct 22–28

Fernando Alday

Oct 18–22

Dionysios Anninos

Oct 18–22

Bernardo Araneda

Oct 22–30

Abhay Ashtekar

Oct 17–24

Glenn Barnich

Oct 29–Nov 6

Miguel Campiglia

Oct 19–24

Federico Capone

Oct 18–Nov 6

Eduardo Casali

Oct 25–31

Geoffrey Compere

Nov 1–6

Jan de Boer

Oct 18–23

Laura Donnay

Oct 18–24

Laurent Freidel

Nov 3–7

Marc Geiller

Oct 23–31

Rajesh Gopakumar

Oct 28–Nov 4

Sam Gralla

Oct 19–23

Daniel Grumiller

Oct 25–30

Alfredo Guevara

Oct 16–22

Jelle Hartong

Oct 25–31

Temple He

Oct 18–24

Mina Himwich

Oct 27–30

Diksha Jain

Oct 24–Nov 1

Adam Kmec

Oct 31–Nov 7

Per Kraus

Oct 18–24

Hare Krishna

Oct 18–29

Arthur Lipstein

Oct 19–24

Juan Maldacena

TBC

Lionel Mason

Oct 18–23

Edward Mazenc

Oct 25–Nov 1

Noah Miller

TBC

Prahar Mitra

Oct 25–31

Sruthi Narayanan

Oct 19–Nov 6

Kévin Nguyen

Oct 18–24

Monica Pate

Oct 29–31

Malcolm Perry

Oct 25–Nov 2

Marios Petropoulos

Nov 2–10

Ana-Maria Raclariu

Nov 1–6

Suvrat Raju

Oct 18–24

Francisco Rojas

Oct 18–26

Biswajit Sahoo

Oct 25–Nov 3

Kostas Skenderis

Oct 29–Nov 6

Evgeny Skvortsov

Nov 1–7

Wei Song

Oct 18–25

Stephan Stieberger

Oct 29–Nov 6

Marika Taylor

Oct 29–Nov 6

Tomasz Taylor

Nov 2–6

Robert Wald

Nov 3–7

Aron Wall

Oct 18–24

Tom Wetzstein

Oct 17–24

Venue

Jefferson Laboratory

Harvard University
17 Oxford Street
Cambridge, MA 02138

Contact

Katie Feaster
katie_feaster@fas.harvard.edu

Organizers

Celestial
Holography

Three weeks at Harvard devoted to celestial holography.

Jefferson Laboratory

Romain Ruzziconi

Atul Sharma

Andrew Strominger

CelestialHolography

Three weeks at Harvard devoted to celestial holography.

Jefferson Laboratory

Romain Ruzziconi

Atul Sharma

Andrew Strominger

Celestial
Holography