Álvarez-Domínguez, Á orcid.org/0000-0003-4097-1429 and Winstanley, E. orcid.org/0000-0001-8964-8142 (2025) Quantum fermion superradiance and vacuum ambiguities on charged black holes. Journal of High Energy Physics, 2025 (5). 118. ISSN 1126-6708
Abstract
Unlike a classical charged bosonic field, a classical charged fermion field on a static charged black hole does not exhibit superradiant scattering. We demonstrate that the quantum analogue of this classical process is however present. We construct a vacuum state for the fermion field which has no incoming particles from past null infinity, but which contains, at future null infinity, a nonthermal flux of particles. This state describes both the discharge and energy loss of the black hole, and we analyze how the interpretation of this phenomenon depends on the ambiguities inherent in defining the quantum vacuum.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2025 The Authors. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), (http://creativecommons.org/licenses/by/4.0/) which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
Keywords: | Black Holes; Nonperturbative Effects |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematical and Physical Sciences |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 May 2025 14:45 |
Last Modified: | 19 May 2025 14:45 |
Status: | Published |
Publisher: | Springer Science and Business Media LLC |
Refereed: | Yes |
Identification Number: | 10.1007/jhep05(2025)118 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:226833 |