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École normale supérieure Summer Institute 2023

→ Europe/Paris
Conf IV, 2nd floor (LPENS)

Conf IV, 2nd floor

LPENS

24 Rue Lhomond, 75005 Paris, France
Miguel Paulos (Chair) (Ecole Normale Superieure), Costas Bachas (LPENS), Pierre Fayet (LPENS), Jean Iliopoulos (LPENS), Dan Israel (LPTHE), Elias Kiritsis (UoC and APC), Kallia Petraki (LPENS), Giuseppe Policastro (LPENS)
Description

We are looking forward to welcoming you to the 2023 edition of the ENS Summer Institute. The ENS Summer Institute aims to cover a broad spectrum of topics in high-energy physics and cosmology, and provide ample opportunities for discussion.This year, it will include sessions on Integrability and Bootstrap, Anomalies and Generalized Symmetries, Holography and Supergravity, Primordial Black Holes, Cosmological Phase Transitions and Gravitational Waves. We will also take the opportunity to honour the memory and scientific legacy of colleagues who have left us in recent years:  Claude Bouchiat, Eugène Cremmer, Jean-Loup Gervais and Costas Kounnas.

 

 

Recent past editions: 2018, 2017

Next edition: 2024

Confirmed Speakers:

  • Nikolay Bobev (KU Leuven)
  • Nikolay Gromov (King's College)
  • Diego Hofman (UvA)
  • Zohar Komargodski (SCGP Stony Brook)
  • Shota Komatsu (CERN)
  • Thomas Konstantin (DESY)
  • Florian Kühnel (Munich)
  • Alexander Kusenko (UCLA)
  • Kyriakos Papadodimas (CERN)
  • Ashoke Sen (ICTS)
  • Geraldine Servant (DESY)
  • Daniele Steer (APC Paris)

 

 

CARTON INVITATION.pdf
Claude BOUCHIAT Memorial Conference Scientific Program.pdf
ENS2023.pdf
Contact
  • lundi 3 juillet
    • 09:30 → 14:30
      Costas Kounnas memorial session
      • 09:30
        Costas Kounnas, a Passionate Man 15m

        I will briefly highlight some personal recollections of our long friendship and our scientific collaboration.

        Orateur: Luis Alvarez-Gaume
        LUIS GAUME.pdf
      • 09:45
        Costas Kounnas: scientific and personal memories 30m

        In this talk I look back to some of Costas’ outstanding scientific contributions and I will recollect some memories

        Orateur: Dieter Luest (Max-Planck-Institut fuer Physik, Ludwig-Maximilians-Universitaet)
        DIETER LUST.pdf
      • 10:15
        Carlo Angelantonij 15m
        Orateur: Carlo Angelantonij
        Angelantonj.pdf
      • 10:30
        John Rizos 15m
        Orateur: John Rizos
        ens2023_rizos.pdf
      • 10:45
        Nick Toumbas 15m
        Orateur: Nick Toumbas
        TOUMBAS.pdf
      • 11:00
        Coffe Break 30m
      • 11:30
        Supergravity Models of Inflation with New Fayet-Iliopoulos Terms 30m

        I briefly review the advantages and limitations of low-energy effective field theories of slow-roll inflation obtained by using the recently discovered "new Fayet-Iliopoulos" terms in supergravity.

        Orateur: Massimo Porrati
        MASSIMO.pdf
      • 12:00
        Ignatios Antoniadis 15m
        Orateur: Igniatios Antoniadis (Ecole Polytechnique Centre de Physique Theorique (CPHT))
        Antoniadis_CKmemorial2023.pdf
      • 12:15
        Hervé Partouche 15m
        Orateur: Hervé Partouche
        Partouche.pdf
      • 12:30
        Lunch 1h 30m
      • 14:00
        Ioannis Florakis 30m
        Orateur: Ioannis Florakis
        ENS 2023 Florakis.pdf
    • 14:30 → 17:15
      Eugène Cremmer memorial session
      • 14:30
        The humble giant of supergravity 15m

        I will celebrate Eugène Cremmer's groundbreaking contributions, that have shaped the supergravity and string theory panorama for almost 50 years.
        Today they keep sourcing new ideas, reaching as far as the the physics of gravitational waves.

        Orateur: Anna Ceresole
        CERESOLE.pdf
      • 14:45
        Long Time Scales: Complexities and Dualities 30m
        Orateur: Eliezer Rabinovici
      • 15:15
        Vyatcheslav Mukhanov 15m
        Orateur: Vyatcheslav Mukhanov
      • 15:30
        Plotting with Stanley Mandelstam, visas from Nicole and trombones with Eugène: My times at LPTENS 15m
        Orateur: Kelly Stelle
        Stelle ENS July 2023.pdf
      • 15:45
        Coffee Break 30m
      • 16:15
        Non-relativistic corners in string theory and AdS/CFT 30m

        I will start by showing how certain near BPS limits of N=4 SYM lead to a type of non-relativistic string, indicating its relevance as a corner of the AdS/CFT correspondence. Subsequently, I discuss how these fit in the larger landscape of non-relativistic strings. The original formulation of non-relativistic strings on flat target spacetime was introduced already twenty years ago, but recent progress in our understanding of non-Lorentzian geometries such as Newton-Cartan geometry has enabled to formulate this sector on arbitrary curved nonrelativistic spacetimes. I will show how strings on torsional string Newton-Cartan geometry arise from a limit of relativistic strings. Finally, I will introduce a further limit that leads to a novel class of worldsheet sigma models that not only have a non-relativistic target spacetime but also exhibit non-relativistic worldsheet symmetries, and explain that such Gallilean sigma models are connected to near BPS limits of the AdS/CFT correspondence.

        Orateur: Niels Obers
        NRST_Paris_2023_obers_ENS.pdf
      • 16:45
        The man who knew more 15m
        Orateur: Jean-Pierre Derendinger
        Derendinger_ENS_03_07_23.pdf
  • mardi 4 juillet
    • 11:00 → 12:00
      Formal theory
      • 11:00
        Holography and localization of information in Quantum Gravity" 1h
        Orateur: Kyriakos Papadodimas
    • 14:00 → 15:00
      Formal theory
      • 14:00
        Large N Partition Functions, Holography, and Black Holes 1h

        I will discuss the large N behavior of partition functions of
        the ABJM theory on compact Euclidean manifolds. I will pay particular
        attention to the S^3 free energy and the topologically twisted index for
        which I will present closed form expressions valid to all orders in the
        large N expansion. These results have important implications for
        holography and the microscopic entropy counting of AdS_4 black holes
        which I will discuss. I will also briefly discuss generalizations of
        these results to the superconformal index, as well as to other 3d SCFTs
        arising from M2-branes.

        Orateur: Nikolay Bobev
        Bobev- LargeN-Holo-BH.pdf
    • 15:00 → 15:30
      Coffee Break 30m
  • mercredi 5 juillet
    • 11:00 → 12:00
      Formal theory
      • 11:00
        Revisiting logarithmic corrections to supersymmetric black hole entropy 1h

        In this talk we shall review the old and new approaches to computing logarithmic correction to supersymmetric black hole entropy.

        Orateur: Ashoke Sen
        Sen-logfull.pdf
    • 14:00 → 15:45
      Jean-Loup Gervais memorial session
      • 14:00
        Adel Bilal 15m
        Orateur: Adel Bilal
        Adel-Jean-Loup-Gervais.pdf
      • 14:15
        Hilbert Space and Symmetries of Large N Extended States 30m

        We discuss the large N expansion in the background of extended states with implementation of
        (Goldstone )symmetries and the construction of the Hilbert space. The large N thermofield represents the main focus, with the emergent dynamics of Left-Right bulk fields and collective symmetry coordinates providing the basis for a systematic 1/N expansion.

        Orateur: Antal Jevicki
        Jevicki-ENSTalk.pdf
      • 14:45
        A personal selection of Jean-Loup Gervais's best papers 30m

        I have selected 14 of his papers essentially on various aspects of quantum field theories among his most influential ones and/or which I find most intriguing and interesting.
        This will come with a few personal anecdotes on the genesis of some of them and the scientific environment of that time as I remember it..

        Orateur: André Neveu
        Neveu - gervais040723.pdf
      • 15:15
        Coffee Break 30m
    • 15:45 → 16:45
      Formal theory
      • 15:45
        Information Recovery from Black Holes via Islands 1h

        I will review ingredients of the island mechanism for evaluating entropies of entanglement of Hawking radiation from black holes. I will then focus on the problem of information recovery, for an object carrying energy and entropy thrown into a black hole, using the generalized entropy formalism within the framework of JT gravity, where the backreaction problem can be solved.

        Orateur: Prem Kumar
        Prem.pdf
  • jeudi 6 juillet
    • 11:00 → 12:00
      Formal theory
      • 11:00
        Large Charge 't Hooft Limit of N=4 Super-Yang-Mills 1h

        The planar integrability of N = 4 super-Yang-Mills (SYM) is the cornerstone for numerous exact observables. We show that the large charge sector of the SU(2) N = 4 SYM provides another interesting solvable corner which exhibits striking similarities despite being far from the planar limit.

        Orateur: Shota Komatsu
        ENS Komatsu.pdf
    • 14:00 → 15:00
      Formal theory
      • 14:00
        Going beyond the spectrum in planar N=4 SYM with integrability and crossing symmetry 1h

        We continue to develop a method merging Integrability and Conformal Bootstrap to extract CFT data in integrable conformal gauge theories such as N =4 SYM.
        We consider the 1D defect CFT defined line in the theory, whose non-perturbative spectrum is governed by the Quantum Spectral Curve (QSC). In addition, we use that the deformed setup of a cusped Wilson line is also controlled by the QSC, which translates into two nontrivial relations connecting integrated 4-point correlators to cusp spectral data, such as the Bremsstrahlung and Curvature functions – known analytically from the QSC. Combining these new constraints and the spectrum of the 10 lowest-lying states with the Numerical Conformal Bootstrap, we obtain very sharp rigorous numerical bounds for the structure constant of the first nonprotected states. Furthermore, we will discuss analytic results and extension to multi-correlators.

        Orateur: Nikolay Gromov
        2023 Paris ENS2.pptx
    • 15:00 → 15:30
      Coffee Break 30m
  • vendredi 7 juillet
    • 11:00 → 12:00
      Formal theory
      • 11:00
        The (classical) theory of fields 1h

        A new look at electromagnetism and gravity.

        Orateur: Diego Hofman
    • 13:45 → 14:45
      Formal theory
      • 13:45
        Defects in QFT above 2 Dimensions 1h

        We review recent ideas about defects in QFT, including general theorems and examples of defects in magnets and gauge theories.

        Orateur: Zohar Komargodski
    • 14:45 → 15:15
      Coffee Break 30m
  • lundi 10 juillet
    • 10:30 → 11:00
      Coffee and tea 30m
    • 11:00 → 12:00
      Cosmology and phenomenology
      • 11:00
        Cosmology with gravitational waves: latest results and prospects 1h
        Orateur: Danièle Steer (APC)
        Steer-ENS.pdf
    • 14:00 → 15:00
      Cosmology and phenomenology
      • 14:00
        Gravitational waves from cosmological phase transitions 1h
        Orateur: Thomas Konstantin (DESY)
        ThomasKONSTANTIN.pdf
    • 15:00 → 15:30
      Coffee break 30m
    • 15:30 → 16:30
      Cosmology and phenomenology
  • mardi 11 juillet
  • mercredi 12 juillet
  • jeudi 13 juillet
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