paper

JT gravity and near-extremal thermodynamics for Kerr black holes in for rotating perturbations

arXiv:2212.12332 · doi:10.1007/JHEP02(2023)132

Abstract

We study the near horizon 2d gravity theory which captures the near extremal thermodynamics of Kerr black holes where a linear combination of excess angular momentum and excess mass is held fixed. These correspond to processes where both the mass and the angular momenta of extremal Kerr black holes are perturbed leaving them near extremal. For the Kerr we hold while for Myers-Perry(MP) type Kerr black hole in we hold . We show that in near horizon, the 2d Jackiw-Teitelboim theory is able to capture the thermodynamics of the higher dimensional black holes at small near extremal temperatures . We show this by generalizing the near horizon limits found in literature by parameters and for the two geometries. The resulting JT theory captures the near extremal thermodynamics of such geometries provided we identify the temperature of the near horizon geometry to be for 4d Kerr and for 5d Kerr where is their chemical potential, with and respectively. We also argue that such a theory embeds itself non-trivially in the higher dimensional theory dual to the Kerr geometries.

27-pages, Appendix-A added

References in corpus (24)

Cited by in corpus (1)