Statut  Confirmé 
Série  SEMCPHT 
Domaines  hepth 
Date  Jeudi 21 Mars 2019 
Heure  11:00 
Institut  CPHT 
Salle  Salle de Conference Louis Michel (Bât.6 CPHT) 
Nom de l'orateur  Cassani 
Prenom de l'orateur  Davide 
Addresse email de l'orateur  
Institution de l'orateur  Padua U. 
Titre  On the holographic origin of the BekensteinHawking entropy of 1/16 BPS AdS_5 black holes 
Résumé  Providing a microscopic derivation of the entropy of supersymmetric asymptotically AdS_5 black holes has been an open problem for 15 years. In the talk I will present progress in this direction. On the gravity side of the AdS/CFT correspondence, I will describe a BPS limit of black hole thermodynamics by first focussing on a supersymmetric family of complexified solutions and then reaching extremality. In this limit the black hole entropy is the Legendre transform of the onshell gravitational action with respect to a set of chemical potentials subject to a specific constraint. The latter follows from supersymmetry and regularity in the Euclidean bulk geometry. The gravitational analysis instructs us that the dual N=1 superconformal field theory is defined on a twisted S^1 x S^3 with complexified chemical potentials obeying the constraint, and localization allows to compute the corresponding partition function exactly. This computation defines a generalization of the supersymmetric Casimir energy, whose Legendre transform at large N precisely reproduces the Bekenstein Hawking entropy of the black hole. 
Numéro de preprint arXiv  
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