Black Hole Superradiance From Kerr/CFT
High Energy Physics - Theory
2014-11-20 v1 High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
Abstract
The superradiant scattering of a scalar field with frequency and angular momentum (\omega,m) by a near-extreme Kerr black hole with mass and spin (M,J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. In this paper we show that for frequencies scaled to the superradiant bound the full functional dependence on (\omega,m,M,J) of the scattering amplitudes is precisely reproduced by a dual two-dimensional conformal field theory in which the black hole corresponds to a specific thermal state and the scalar field to a specific operator. This striking agreement corroborates a conjectured Kerr/CFT correspondence.
Cite
@article{arxiv.0907.3477,
title = {Black Hole Superradiance From Kerr/CFT},
author = {Irene Bredberg and Thomas Hartman and Wei Song and Andrew Strominger},
journal= {arXiv preprint arXiv:0907.3477},
year = {2014}
}
Comments
34 pages