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Vacuum polarization for lukewarm black holes

Winstanley , E. and Young , P.M. (2008) Vacuum polarization for lukewarm black holes. Physical Review D, 77 (2). Art. No. 024008. ISSN 1550-2368

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Abstract

We compute the renormalized expectation value of the square of a quantum scalar field on a Reissner-Nordström–de Sitter black hole in which the temperatures of the event and cosmological horizons are equal (“lukewarm” black hole). Our numerical calculations for a thermal state at the same temperature as the two horizons indicate that this renormalized expectation value is regular on both the event and cosmological horizons. We are able to show analytically, using an approximation for the field modes near the horizons, that this is indeed the case.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 The American Physical Society. This is an author produced version of a paper published in Physical Review D. Uploaded in accordance with the publisher's self-archiving policy.
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
Depositing User: Mrs Megan Hobbs
Date Deposited: 12 Mar 2010 15:53
Last Modified: 14 Jun 2014 02:36
Published Version: http://dx.doi.org/10.1103/PhysRevD.77.024008
Status: Published
Publisher: American Physical Society
Refereed: Yes
Identification Number: 10.1103/PhysRevD.77.024008
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/10555

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