Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Mercredi 26 Avril 2017
Heure 14:15
Institut IPHT
Salle Salle Claude Itzykson, Bât. 774
Nom de l'orateur Kiril Hristov
Prenom de l'orateur
Addresse email de l'orateur
Institution de l'orateur INRNE, Sofiya
Titre Black hole microstates in AdS$_4$ and AdS$_5$ from supersymmetric partition functions
Résumé This talk addresses the problem of counting the microstates of supersymmetric asymptotically AdS black holes in terms of a holographically dual field theory. We focus on a particular BPS class of AdS$_2 x S^2$ near-horizon geometry in N=2 gauged supergravity relevant both for AdS$_4$ and AdS$_5$ black holes. We consider in the large N limit the topologically twisted index of the ABJM theory and the partition function of N=4 SYM and show that they correctly reproduce the Bekenstein-Hawking entropy of the AdS$_4$ and AdS$_5$ black holes, respectively. An extremization of the partition functions with respect to a set of chemical potentials is required. We interpret it as the selection of the exact R-symmetry of the superconformal quantum mechanics describing the horizon of the black holes.
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