Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
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 Bekenstein-Hawking 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 on-shell 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.
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