mardi 26 novembre 2019

Journal clubs until the end of the year

  • on Friday, November 29th at 14h15, Piotr Tourkine will present  "Kerr Black Holes as Elementary Particles" by Nima Arkani-Hamed, Yu-tin Huang, Donal O'Connell https://arxiv.org/abs/1906.10100
  • on Friday,  November 15th Yixuan Li  and  Severin Lüst will discuss the main swampland conjectures, as follows:

    - In the first part, Yixuan will give a short presentation of the panel of the different swampland conjectures (centering on the Weak Gravity Conjecture and the Distance Conjecture) that have been stated, and some links between them, using sections 2,3,4 of   Eran Palti's review

    https://arxiv.org/abs/1903.06239

    - In the second half, Severin will present the paper by Grimm, Palti, and Valenzuela,

    http://arxiv.org/abs/arXiv:1802.08264

    which discusses a string theory test of the infinite distance conjecture. A summary of this paper can also be found in section 4.7.1 of Palti's review.



mardi 1 octobre 2019

New academic year for the journal club!

Dear all, this academic year's journal club will kick off on October 10th, as follows



Other papers that are up for discussion are:

  • "Kerr Black Holes as Elementary Particles" by Nima Arkani-Hamed, Yu-tin Huang and Donal O'Connell https://arxiv.org/abs/1906.10100  

    "From Scattering Amplitudes to Classical Physics: Universality, Double Copy and Soft Theorems" by Y. F. Bautista, A. Guevara, https://arxiv.org/abs/1903.12419                                                                                                           
  • "Bounds on chaos from the eigenstate thermalization hypothesis" by C. Murthy, M. Srednicki, https://arxiv.org/abs/1906.10808

    "Typicality and thermality in 2d CFT" by S. Datta, P. Kraus, B. Michel https://arxiv.org/abs/1904.00668

    "Lack of thermalization in (1+1)-d QCD at large Nc" by Axel Cortés Cubero, Neil J. Robinson https://arxiv.org/pdf/1908.00270.pdf
                                                                             
  • "Conformality Lost" by David B. Kaplan, Jong-Wan Lee, Dam T. Son, Mikhail A. Stephanov   https://arxiv.org/abs/0905.4752 

    "Symmetry Breaking in Coupled SYK or Tensor Models" by J. Kim, I. Klebanov, G. Tarnopolsky, W. Zhao https://arxiv.org/abs/1902.02287
  • "A Universal Relation Between Corrections to Entropy and Extremality" by Garrett Goon, Riccardo Penco https://arxiv.org/abs/1909.05254 

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 Louis Michel (Bât.6)

when:   every other Friday at 2:15 p.m., starting Oct. 10th

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

practical:

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 https://arxiv.org/abs/1601.04744. Additional material can be found in https://arxiv.org/abs/1406.7304 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 https://arxiv.org/pdf/1709.09668.pdf                                                                                                      
  • 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, https://arxiv.org/pdf/1810.13440.pdf                   
  • 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: https://arxiv.org/abs/1810.11442 and make connections to https://arxiv.org/abs/1812.09613 (Francesco Benini, Paolo Milan) and https://arxiv.org/abs/1705.05383 (Seyed Morteza Hosseini, Kiril Hristov, Alberto Zaffaroni).