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École Normale Supérieure Summer Institute 2024

Jun 20 – 28, 2024
ENS and Collège de France
Europe/Paris timezone

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Contribution List

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  1. 33. No global symmetries and string universality
    Prof. Miguel Montero
    6/20/24, 11:00 AM
  2. 13. Lower-dimensional gravity, DSSYK and group theory
    Thomas Mertens (University of Ghent, Belgium)
    6/20/24, 2:00 PM

    In this talk, I will report on recent process in understanding lower-dimensional gravitational models structurally from group theory. The main strength of this approach seems to be its universality in describing different models. In particular, I will discuss how it can be used to argue for a bulk holographic dual of double-scaled SYK (DSSYK) in terms of sine dilaton gravity.

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  3. 15. The Parisi-Sourlas Uplift and Infinitely Many Solvable 4d CFTs
    Emilio Trevisani (CNRS - Sorbonne Université)
    6/20/24, 3:30 PM

    Parisi-Sourlas (PS) supersymmetry is known to emerge in some models with random field type of disorder. When PS SUSY is present the d-dimensional theory allows for a d−2-dimensional description. In this paper we investigate the reversed question and we provide new indications that any given CFT_{d−2} can be uplifted to a PS SUSY CFT_d. We show that any scalar four-point function of a CFT_{d−2}...

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  4. 17. Arithmetic Chaos Inside Black Holes
    Sean Hartnoll (University of Cambridge)
    6/21/24, 11:30 AM

    It has been known for over 50 years that spacetime dynamics becomes chaotic in the approach to singularities. Furthermore, the classical gravitational dynamics exhibits remarkable number-theoretic properties known as arithmetic chaos. I will review these facts and give an explicit realisation of these phenomena in the interior of an asymptotically AdS black hole. I will discuss possible...

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  5. 18. Tracking celestial and Carrollian theories
    Laura Donnay (SISSA)
    6/21/24, 2:30 PM

    In this talk, I will present recent developments towards formulating a holographic correspondence for asymptotically flat spacetimes. In particular, I will discuss the role of newly uncovered symmetries in the so-called celestial and Carrollian holographic proposals.

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  6. 2. Nonrelativistic conformal field theory
    Prof. Dam Son
    6/22/24, 11:00 AM

    We will review the notions of Schrödinger symmetry and nonrelativistic conformal field theory, in particular the restrictions that Schrödinger symmetry imposes on correlation function and the operator-state correspondence. We will then consider the most important example of NRCFT --- fermions at unitarity, and derive physical consequences of the formalism.

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  7. 3. The dual of semi-classical gravity
    Prof. Jan de Boer
    6/24/24, 11:00 AM

    Recent work has produced a consistent picture of the holographic dual description of semi-classical gravity. I will describe this picture, several applications of this picture including the factorization puzzle and the information paradox, and some open questions.

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  8. 4. Energy Reflection and Transmission at 2D Holographic Interfaces
    Prof. Shira Chapman
    6/24/24, 2:00 PM

    Scattering from conformal interfaces in two dimensions is universal in that the flux of reflected and transmitted energy does not depend on the details of the initial state. In this talk, I will present two gravitational calculations of the energy reflection and transmission coefficients for interfaces with holographic duals. I will first consider a thin-brane holographic toy model which is...

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  9. 5. The entropy of Holographic CFTs at large charge and angular momentum
    Prof. Shiraz Minwalla
    6/25/24, 11:00 AM

    Black holes in AdS$_d$ (with $d\ geq 4$) are always unstable at large angular momentum, and sometimes unstable at large charge. In this talk we present proposals for the end point of these instabilities. Our constructions suggest new entropy formulae for ${\cal N}=4$ Yang-MIlls in the neighbourhood of extremality, and and in particular on the BPS manifold.

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  10. 6. Toward stringy horizons
    Prof. Hong Liu
    6/25/24, 2:00 PM
  11. 19. AdS3/CFT2 @ free point and beyond
    Matthias Gaberdiel (ETH Zurich)
    6/26/24, 9:00 AM
  12. 20. Costas Bachas: (personal) strings
    Dieter Luest (Max-Planck-Institut fuer Physik, Ludwig-Maximilians-Universitaet)
    6/26/24, 9:25 AM
  13. 21. Two Tales about 2d CFTs
    Hirosi Ooguri
    6/26/24, 9:50 AM
  14. 22. Novel Modular Forms Arising in Correlators in N=4 SYM
    Michael Green
    6/26/24, 10:45 AM
  15. 23. Defects in fully extended TQFT -- A tour in pictures
    Ilka Brunner
    6/26/24, 11:10 AM
  16. 24. Interpolating between QFT and machine learning
    Michael Douglas
    6/26/24, 11:35 AM

    Costas Bachas and I wrote several papers together on conformal field theory
    and Dirichlet branes. In this talk I will try to connect these topics with my more recent
    interests in machine learning.

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  17. 25. BH and fuzzball perturbations from a gauge theory perspective
    Massimo Bianchi
    6/26/24, 12:00 PM
  18. 26. Magnetic charges in gravity
    Chris Hull
    6/26/24, 2:00 PM
  19. 27. Back to D-Branes & Black Hole Information
    Erik Verlinde
    6/26/24, 2:25 PM
  20. 28. From AdS_3 to Carroll fever and flat mania
    Marios Petropoulos
    6/26/24, 2:50 PM
  21. 29. The omnipresence of the Arrow of Time
    Vasilis Papadopoulos
    6/26/24, 3:45 PM
  22. 30. Exponential S-matrix for Classical Observables
    Pierre Vanhove (IPhT CEA-Saclay)
    6/26/24, 4:10 PM
  23. 31. Physics with Costas: exploring the String Landscape
    Igniatios Antoniadis (Ecole Polytechnique Centre de Physique Theorique (CPHT))
    6/26/24, 4:35 PM
  24. 32. Supersymmetry Breaking Cascade Flow from N=2 to adjoint QCD
    Eric D'Hoker
    6/26/24, 5:00 PM
  25. 7. A Holographic View of the QCD Axion
    Tony Gherghetta (University of Minnesota)
    6/27/24, 11:00 AM
  26. 8. Gravitational waves from axion strings
    Edward Hardy
    6/27/24, 2:00 PM
  27. 9. Axions from the Quantum Gravity Viewpoint
    Matt Reece (Harvard)
    6/27/24, 3:30 PM
  28. 10. The Piezoaxionic Effect: dark matter detection and new forces
    Amalia Madden (Perimeter Institute)
    6/28/24, 11:00 AM
  29. 11. DETOX haloscope first results
    Arnaud Thery (ENS)
    6/28/24, 2:00 PM
  30. 14. Categorical Landau Paradigm
    Sakura Schafer Nameki (University of Oxford, UK)
  31. 16. Cryptographic Censorship: A Quantum Complexity Approach to (Quantum) Cosmic Censorship
    Netta Engelhardt (MIT)

    Do naked singularities exist as typical states in quantum gravity? Various considerations, from black hole thermodynamics to empirical observations, suggest that the answer is no. Nevertheless, in the past decade, numerous generic solutions to GR in four spacetime dimensions have been found to be likely candidates for naked singularity formation. In this talk, I’ll give evidence that such...

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