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- Title
Conformally rescaled spacetimes and Hawking radiation.
- Authors
Nielsen, Alex; Firouzjaee, J.
- Abstract
We study various derivations of Hawking radiation in conformally rescaled metrics. We focus on two important properties, the location of the horizon under a conformal transformation and its associated temperature. We find that the production of Hawking radiation cannot be associated in all cases to a trapping horizon because its location is not invariant under a conformal transformation. We also find evidence that the temperature of the Hawking radiation should transform simply under a conformal transformation, being invariant for asymptotic observers in the limit that the conformal transformation factor is unity at their location.
- Subjects
HAWKING radiation; SPACETIME; BLACKBODY radiation; HEAT radiation &; absorption; QUANTUM field theory; THERMODYNAMICS; ELECTROMAGNETIC theory
- Publication
General Relativity & Gravitation, 2013, Vol 45, Issue 9, p1815
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-013-1560-7