Black-Hole Microstructure V

5 juin 2023, 09:30 → 9 juin 2023, 18:30 Europe/Paris

Amphi Bloch (IPhT, CEA Saclay)

Conference:  June 5 - 9  

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The microscopic description of black holes has been a challenge for more that forty years.  There are now quite a number of promising approaches to solving this problem and the primary goal of this conference and workshop is to bring together experts in these areas to identify synergies, engage in constructive criticism and resolve apparent conflicts.  A significant focus will be the dynamics of black-hole microstructure: how infalling matter is scrambled and how information is recovered.

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Conference Dinner: 

19:00 Thursday June 8, at the Restaurant Moustache, 3, rue Sainte Beuve, 75006 Paris​
Confirmed participants only

 

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Informal workshop: June 12-16

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Organizers: Iosif Bena and Nick Warner

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Previous meetings

Black-Hole Microstructure IV 

Black-Hole Microstructure III

Black-Hole Microstructure II

Black-Hole Microstructure I

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Programme

The conference will have four or five talks a day.    The talks will all be "in-person" at the IPhT, CEA-Saclay and they will be broadcast via Zoom.

Speakers:

Ibrahima Bah                Vijay Balasubramanian            Massimo Bianchi                  Gregorio Carullo           

Nejc Čeplak                  Oscar Dias                  Bin Guo                  Pierre Heidmann                       

Anthony Houppe                  Cristoforo Iossa                  Maciej Kolanowski                  Arnab Kundu

Yixuan Li                  Alex Lupsasca                  Raghu Mahajan                  Emil Martinec

Stefano Massai                  Samir Mathur                  Daniel Mayerson                  Andrea Puhm

Masaki Shigemori                  Dimitros Toulikas                  David Turton                   Erik Verlinde

Youtube links to talks:

Monday
 Daniel Mayerson - https://www.youtube.com/watch?v=KSgXWXyGd18

 

Gregorio Carullo  - https://www.youtube.com/watch?v=w53MgFN5878

Alex Lupsasca - https://www.youtube.com/watch?v=Q7laU727PU8

Maciej Kolanowski - https://www.youtube.com/watch?v=Q7laU727PU8&t=4100s

Andrea Puhm - https://www.youtube.com/watch?v=_lJGaRHemlk

Tuesday
 Emil Martinec - https://www.youtube.com/watch?v=D6bqRgGteSE

 

 

Arnab Kundu - https://www.youtube.com/watch?v=6CVAIDL0jeo

 

 

Anthony Houppe - https://www.youtube.com/watch?v=olXAa2eBQIc

 

Stefano Massai - https://www.youtube.com/watch?v=olXAa2eBQIc&t=3800s

 

Nejc Ceplak - https://www.youtube.com/watch?v=Skm4BI6PCM0&t=1325s

 

Wednesday
 Vijay Balasubramanian - https://www.youtube.com/watch?v=ZgVcdwKbWHY

 

Raghu Mahajan - https://www.youtube.com/watch?v=qBl744IKNN4

 

Samir Mathur - https://www.youtube.com/watch?v=q2C2aIbJJsg

 

David Turton -  https://www.youtube.com/watch?v=q2C2aIbJJsg&t=4460s

Massimo Bianchi - https://www.youtube.com/watch?v=b_3TU6kvpwI

Thursday
 

Óscar Dias - https://www.youtube.com/watch?v=xszC4fmaYDw

Ibou Bah - https://www.youtube.com/watch?v=-97g-waO0M4

 

Yixuan Li - https://www.youtube.com/watch?v=jjPGzCVhwHk

 

Bin Guo - https://www.youtube.com/watch?v=jjPGzCVhwHk ( second part )

Friday
 

Erik Verlinde - https://www.youtube.com/watch?v=DWW8KmjEyc4

 

Pierre Heidmann - https://www.youtube.com/watch?v=XtXSDyrYjsE

 

Cristoforo Iossa - https://www.youtube.com/watch?v=eyJxx1gijLw&t=300s

Dimitrios Toulikas - https://www.youtube.com/watch?v=eyJxx1gijLw&t=4079s

  

Masaki Shigemori - https://www.youtube.com/watch?v=_y7n06iDLU4 

 

 

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lundi 5 juin

09:55 Session Chair: Nick Warner

1 Gravitational Observation Opportunities for the Fuzzball Program

Orateur: Daniel Mayerson

11:00 Coffee Break

2 Gravitational-wave signatures of beyond-Kerr: observational status, developments and perspectives

Orateur: Gregorio Carullo

12:30 Lunch

13:50 Session Chair: Daniel Mayerson

3 The Black-Hole Photon Ring

Orateur: Alex Lupsasca

4 Extremal black holes as amplifiers of new physics

Orateur: Kolanowski Maciej

16:00 Coffee

5 The correspondence between rotating black holes and fundamental strings

Orateur: Andrea Puhm

mardi 6 juin

09:50 Session Chair: Iosif Bena

6 The Holar Wind

Orateur: Emil Martinec

11:00 Coffee

7 Synthesis of Dip-Ramp-Plateau: Black Holes, Fuzzballs and a Semi-classical Analysis.

Orateur: Arnab Kundu

12:30 Lunch

13:50 Session Chair: Arnab Kundu

8 Anthony Houppe

Orateur: Anthony Houppe

9 Exploring fuzzballs with worldsheet methods

Orateur: Stefano Massai

16:00 Coffee

10 Vector Superstrata

Orateur: Nejc Ceplak

17:30 Wine and cheese

mercredi 7 juin

09:50 Session Chair: Eric Perlmutter

11 Origin of the entropy of black holes in general relativity

Orateur: Vijay Balasubramanian

11:00 Coffee

12 The uses of wormholes

Orateur: Raghu Mahajan

12:30 Lunch

13:50 Session Chair: Emil Martinec

13 The universality of black hole thermodynamics

Abstract: The thermodynamic properties of black holes -- temperature,
entropy and radiation rates -- are usually associated with the
presence of a horizon. We argue that any Extremely Compact Object
(ECO) must have the {\it same} thermodynamic properties. Quantum
fields just outside the surface of an ECO have a large negative
Casimir energy similar to the Boulware vacuum of black holes. If the
thermal radiation emanating from the ECO does not fill the
near-surface region at the local Unruh temperature, then we find that
no solution of gravity equations is possible. In string theory, black
holes microstates are horizonless quantum objects called fuzzballs
that are expected to have a surface $\sim l_p$ outside $r=2GM$; thus
the information puzzle is resolved while preserving the semiclassical
thermodynamics of black holes.

Orateur: Samir Mathur

14 Evolutionary algorithms for multi-center solutions

Orateur: David Turton

16:00 Coffee

15 On the stability and deformability of Top Stars

Orateur: Massimo Bianchi

jeudi 8 juin

09:50 Session Chair: Ruben Minasian

16 New SYM phases at finite chemical potential

Abstract: We do a systematic search of supergravity solutions that, via the AdS5/CFT4 correspondence, are dual to thermal states in N=4 SYM at finite chemical potential. These solutions are required to ultimately reproduce the microscopic entropy of AdS black holes. Using a mix of analytical and numerical methods, we construct and study static and rotating charged hairy solitonic and black hole solutions with global AdS5 asymptotics. They are constructed in a consistent truncation of five dimensional SO(6) gauged supergravity and can thus be uplifted to asymptotically AdS5 x S5 solutions of type IIB supergravity (it is also a truncation of N=8 gauged supergravity). Hairy black holes exist above a critical electric charge and merge with the known Cvetic-Lu-Pope (CLP) black holes along a curve determined by the onset of superradiance in the latter family. The hairy black holes then extend all the way up to the BPS limit (in a phase diagram) and they dominant the microcanonical ensemble when they coexist with the CLP black holes. In the BPS limit, our finite temperature black holes approach new supersymmetric hairy black holes that reduce to the supersymmetric Lucietti-Kunduri-Reall black hole family when the hair condensate vanishes. Our findings permit a good understanding of the full phase space of SYM thermal states with three arbitrary chemical potentials and finite charged scalar fields.

Orateur: Oscar Dias

11:00 Coffee

17 Topological solitons in gravity

Orateur: Ibrahima Bah

12:30 Lunch

13:50 Session Chair: Pierre Heidmann

18 From local supersymmetries to black-hole microstructure

Orateur: Yixuan Li

19 Holography of tensionless string theory on AdS3 orbifolds

Orateur: Bin Guo

16:00 Coffee

19:00 Conference Dinner

vendredi 9 juin

09:50 Session Chair: Samir Mathur

20 An Operator Algebraic Approach to Black Hole Evaporation

Orateur: Erik Verlinde

11:00 Coffee

21 Neutral Solitons and their gravitational signatures

Orateur: Pierre Heidmann

12:30 Lunch

13:50 Session Chair: David Turton

22 The black hole behind the cut

Orateur: Cristoforo Iossa

23 Themelia: the irreducible microstructure of black holes

Orateur: Dimitrios Toulikas

16:00 Coffee

24 Exact non-Abelian supertubes

Orateur: Masaki Shigemori