Cosmological horizons and the generalised second law of thermodynamics

P. C.W. Davies

doi:10.1088/0264-9381/4/6/006

Cosmological horizons and the generalised second law of thermodynamics

P. C.W. Davies

Research output: Contribution to journal › Article › peer-review

109 Scopus citations

Abstract

The author investigates the change in event-horizon area in cosmological models that depart slightly from de Sitter space. If the gravitational source is a perfect inviscid fluid satisfying the dominant energy condition, the area is proved to be non-decreasing. If the fluid is viscous, the area can decrease, but the attendant generation of entropy ensures that the generalised second law of thermodynamics remains unviolated.

Original language	English (US)
Article number	006
Pages (from-to)	L225-L228
Journal	Classical and Quantum Gravity
Volume	4
Issue number	6
DOIs	https://doi.org/10.1088/0264-9381/4/6/006
State	Published - Dec 1 1987
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Cosmological horizons and the generalised second law of thermodynamics

Abstract

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