mardi 26 février 2019

Journal club dates in spring 2019

The dates of the journal club until summer 2019 are:

  • Fri, May 31st volunteer needed!                                                                      
  • on Friday, May 10th , Emil Martinec will explain the core ideas in ``JT gravity as a matrix integral'' by Saad, Shenker and Stanford  arXiv:1903.11115, which attempts a nonperturbative definition of (nearly) AdS2 quantum gravity through matrix model techniques. This work follows on a rich history of attempts to quantize 2d gravity, some of which will be described.  Background material for these aspects of the discussion is older work on the relation between matrix models and Liouville gravity on which much of their discussion is based:

  • on Friday, Apr 19th , Ander Retolaza will present an overview of `` On de Sitter vacua in String theory compactifications’’  based on 1804.01120, 1808.08967 and 1610.01533. Additional material can be found in hep-th/0007018, hep-th/0105097, hep-th/0301240, 0805.1029.                                                                                   
  • on Friday, Mar 22nd, Monica Guica  will present the paper « Local subsystems in gauge theory and gravity" by William Donnelly and Laurent Freidel Additional material can be found in by the first author.

mardi 15 janvier 2019

First four journal clubs in 2019


The first four journal clubs of 2019 will take place on:

  • on Friday, Mar 1st at 2:15 p.m., Eric Mefford will discuss "Probing typical black hole microstates" by de Boer, van Breukelen, Lokhande, Papadodimas, and Verlinde (1901.08527), starting with  an overview of Tomita-Takesaki theory from Witten's lecture notes on entanglement   entropy (1803.04993).        
  • on Friday, Feb 15th at 2:15 p.m., Luca Ciambelli will present "Is there a breakdown of effective field theory at the horizon of an extremal black hole?" by Shahar Hadar and Harvey S. Reall                                                                                                      
  • on Friday, Feb 1st at 2:15 p.m.,Daniel Mayerson will present "Emergent classical spacetime from microstates of an incipient black hole" by Vijay Balasubramanian, David Berenstein, Aitor Lewkowycz, Alexandra Miller, Onkar Parrikar, Charles Rabideau,                   
  • Friday, Jan 18th at 10:15 a.m. (note unusual time!), presented by Chiara Toldo on "Microscopic origin of the Bekenstein-Hawking entropy of supersymmetric AdS5 black holes" by Alejandro Cabo-Bizet, Davide Cassani, Dario Martelli, Sameer Murthy: and make connections to (Francesco Benini, Paolo Milan) and (Seyed Morteza Hosseini, Kiril Hristov, Alberto Zaffaroni).                                                       

dimanche 25 novembre 2018

Next journal clubs in 2018

The next journal clubs before the end of the year are:
  • on Friday, Nov 16th, Kenta Suzuki will present  ``A semiclassical ramp in SYK and in gravity'' by Phil Saad, Stephen H. Shenker and Douglas Stanford arXiv: 1806.06840                                                                                             
  • on Tuesday, Nov 6th, Severin Lüst will present the paper "Towards a proof of the Weak Gravity Conjecture" by Alfredo Urbano, arXiv: 1810.05621
  • on Friday, Oct 19th, Fidel Schaposnik will present  "Eternal traversable wormhole'' by Juan Maldacena and Xiao-Liang Qi arXiv: 1804.00491                                                                           

lundi 17 septembre 2018

New time for the journal club!

In order to better organise our Fridays, the journal club has been moved to Friday afternoons at 2:15 p.m. The location will be Salle de Conférence Louis Michel (Bât.6 CPHT), unless specified otherwise. Coffee will be served in the CPhT coffee area at 2 p.m.

The next journal club will be given on Friday, Sept. 21st by Emilio Trevisani on ``Light-ray operators in conformal field theory''

mardi 28 août 2018

The journal club comes back!

Dear all, this academic year's journal club will kick off on September 7th, as follows

Other papers that are up for discussion are:

You are welcome to propose other papers by clicking the comments button below. Also, since the ideal is to have a discussion about these papers,  it would be great if as many people as possible read the papers ahead of time.

Here is some practical information for this year's newcomers

where : CPHT, Ecole Polytechnique, Salle de Conférence Jean Lascoux (Aile0)

when:   every other Friday at 10:15 a.m., starting Oct. 13th

topics:  recent papers on the quantum structure of black holes, bulk effective field theory, bulk reconstruction (via bootstrap/entanglement), SYK, asymptotic symmetries (BMS)

how it works: one person prepares a presentation, and everyone else reads the paper and prepares for a discussion. Papers can either be chosen from the suggested readings on this website, or the speaker can suggest a paper to read, which should fit with the general topic of the journal club.  

  •  directions to the CPHT can be found at
  •  we are planning to provide free coffee and croissants at the start of the journal club 
  •  internet is provided via eduroam 
  •  after the journal club, we can all have lunch at the canteen of the Ecole Polytechnique. The seminar room will be reserved all day for those people who want to spend the rest of the afternoon at the CPHT. 

jeudi 1 mars 2018

Journal club suspended until September

Due to extensive travel of the two organisers, the Journal club will be suspended until September 2018.

For those interested in discussing recent papers, there will be instead an "arXiv" meeting at Saclay, every Monday at 14:30

You are always welcome to propose papers to discuss next (academic) year, by clicking the "comments" button below.

We would like to warmly thank all who attended for their participation, and look forward for more exciting discussions next year! 

vendredi 22 décembre 2017

First four journal clubs 2018

The first four journal clubs of 2018 will take place on: