Superradiance and quantum states on black hole space-times
Abstract
We consider the definition of the Boulware and Hartle-Hawking states for quantum fields on black hole space-times. The properties of these states on a Schwarzschild black hole have been understood for many years, but neither of these states has a direct analogue on a Kerr black hole. We show how superradiant modes play an important role in the definition of quantum states on Kerr. Superradiance is also present on static black hole space-times, in particular for a charged scalar field on a Reissner-Nordstrom black hole. We explore whether analogues of the Boulware and Hartle-Hawking states exist in this situation.
Keywords
Cite
@article{arxiv.2303.13488,
title = {Superradiance and quantum states on black hole space-times},
author = {Visakan Balakumar and Rafael Bernar and Elizabeth Winstanley},
journal= {arXiv preprint arXiv:2303.13488},
year = {2023}
}
Comments
13 pages, contribution to the proceedings of the "Avenues of Quantum Field Theory in Curved Space-time" conference, Genova, September 2022