Supersymmetry, Localization and Quantum Entropy Function

by Ipsita Mandal (Harish-Chandra Research Institute)

Monday 8 Mar 2010, 14:00 → 15:00 Europe/Zurich

1/1-025 (CERN)

The schedule for this Journal Club on String Theory will be as follows: 1) The latest news in the world of strings Please bring recent papers that caught your attention and briefly summarize motivations, methods and results. 2) "Supersymmetry, Localization and Quantum Entropy Function" discussion led by Ipsita Mandal Abstract: AdS_2/CFT_1 correspondence leads to a prescription for computing the degeneracy of black hole states in terms of path integral over string fields living on the near horizon geometry of the black hole. In this talk, I will discuss about how to make use of the enhanced supersymmetries of the near horizon geometry and localization techniques to argue that the path integral receives contribution only from a special class of string field configurations which are invariant under a subgroup of the supersymmetry transformations. I will identify saddle points which are invariant under this subgroup. I will also use this analysis to show that the integration over infinite number of zero modes generated by the asymptotic symmetries of AdS_2 generate a finite contribution to the path integral. Hope to see you all!!