École Normale Supérieure Summer Institute 2026

25 juin 2026, 09:00 → 3 juil. 2026, 17:00 Europe/Paris

ENS

Giuseppe Policastro (LPTENS), Marc Henneaux (Université Libre de Bruxelles & Collège de France), Miguel Fernandes Paulos (Ecole Normale Superieure), Philine VAN VLIET (ENS Paris)

We are looking forward to welcoming you to the 2026 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 topics on holography, quantum gravity and particle physics.

Location: 75005 Paris

25-26 June: 11, place Marcelin-Berthelot,  salle 2 (Collège de France)

29 June- 03 July: 24 rue Lhomond, room Conf IV, 2nd floor, Erasme building (LPENS)

Recent past editions: 2025, 2024, 2023, 2018, 2017. 

jeu. 25 juin

1 The third law of black hole mechanics

The third law of black hole mechanics asserts that it is impossible for a non-extremal black hole to become extremal in finite time (in classical General Relativity). Counterexamples were found recently: gravitational collapse of a massless charged scalar field can produce an exactly extremal Reissner-Nordstrom black hole in finite time, passing through an intermediate phase in which the solution is exactly Schwarzschild at the horizon. These examples involve matter with a large charge to mass ratio. I will describe how if the charge to mass ratio of matter is suitably bounded then one cannot form an extremal Reissner-Nordstrom black hole in finite time. It is conjectured that one can form an extremal rotating black hole via gravitational collapse of gravitational waves. I shall describe recent work showing that this conjecture is true in five spacetime dimensions.

Orateur: Harvey Reall

2 Nele Callebaut

Orateur: Nele Callebaut

ven. 26 juin

3 Davide Cassani

Orateur: Davide Cassani

4 Andrea Puhm

Orateur: Andrea Puhm

5 Descending into the Modular Bootstrap

Orateur: Jesse Thaler

lun. 29 juin

6 Irene Valenzuela

Orateur: Irene Valenzuela

7 Observing quantum gravity at macroscopic horizon scales

It has often been assumed that quantum gravity effects near a macroscopic black hole horizon should be strongly suppressed due to the enormous hierarchy between the horizon scale and the Planck scale, and that any observable deviations would require highly speculative or poorly controlled non-local physics. However, it has recently become clear that this expectation can fail in a controlled and physically interesting way. In particular, near-extremal black holes can exhibit enhanced quantum fluctuations that become manifest through a variety of physical effects. I will discuss several such effects in this talk.

Orateur: Roberto Emparan

mar. 30 juin

8 Erik Tonni

Orateur: Erik Tonni

9 Multiparty entanglement and holography

Entanglement plays a central role in our understanding of the emergence of spacetime in holography. There is growing evidence that many holographic states have significant multiparty entanglement. I will discuss some signals of multiparty entanglement, and their behaviour in holographic states.

Orateur: Simon Ross

mer. 1 juillet

10 Brando Bellazzini

Orateur: Brando Bellazini

11 Volker Schomerus

Orateur: Volker Schomerus

jeu. 2 juillet

12 Simone Giombi

Orateur: Simone Giombi

13 Chiara Toldo

Orateur: Chiara Toldo

ven. 3 juillet

14 Ana-Maria Raclariu

Orateur: Ana-Maria Raclariu

15 Lorenzo Di Pietro

Orateur: Lorenzo Di Pietro