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Lorentzian wormholes generalize thermodynamics still further

Prado Martín-Moruno and Pedro F González-Díaz

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This paper deals with some thermodynamical aspects of Lorentzian wormholes, including the formulation of the three main laws and the consideration of a possible thermal emission made up of some sort of phantom radiation coming out from the wormhole at a negative temperature. In order for these topics to be consistently developed we have used a 2+2 formalism first advanced by Hayward for spherically symmetric spacetimes, where a generalized surface gravity is defined on the trapping horizon. Our results generalize still further those of the already generalized gravitational thermodynamics.


PACS

04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics

02.40.-k Geometry, differential geometry, and topology

04.50.-h Higher-dimensional gravity and other theories of gravity

MSC

83C75 Space-time singularities, cosmic censorship, etc.

83C57 Black holes

Subjects

Mathematical physics

Gravitation and cosmology

Dates

Issue 21 (7 November 2009)

Received 22 June 2009, in final form 4 September 2009

Published 6 October 2009



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