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 | |
| State | Published - Dec 1 1987 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)