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AdS_2 Supergravity and Superconformal Quantum Mechanics by Astorino, Marco; Cacciatori, Sergio; Klemm, Dietmar; Zanon, Daniela is a scholarly article available to read on EtoBox.

What is AdS_2 Supergravity and Superconformal Quantum Mechanics about?

We investigate the asymptotic dynamics of topological anti-de Sitter supergravity in two dimensions. Starting from the formulation as a BF theory, it is shown that the AdS_2 boundary conditions imply that the asymptotic symmetries form a super-Virasoro algebra. Using the central charge of this algebra in Cardy's formula, we exactly reproduce the thermodynamical entropy of AdS_2 black holes. Furthermore, we show that the dynamics of the dilaton and its superpartner reduces to that of superconformal transformations that leave invariant one chiral component of the stress tensor supercurrent of a two-dimensional conformal field theory. This dynamics is governed by a supersymmetric extension of the de Alfaro-Fubini-Furlan model of conformal quantum mechanics. Finally, two-dimensional de Sitter gravity is also considered, and the dS_2 entropy is computed by counting CFT states.

Author

Astorino, Marco; Cacciatori, Sergio; Klemm, Dietmar; Zanon, Daniela

Published

2002

Language

EN