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) |
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Article number | 006 |
Pages (from-to) | L225-L228 |
Journal | Classical and Quantum Gravity |
Volume | 4 |
Issue number | 6 |
DOIs | |
State | Published - Dec 1 1987 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)