Generalized second law in cosmology from causal boundary entropy

Authors
Citation
R. Brustein, Generalized second law in cosmology from causal boundary entropy, PHYS REV L, 84(10), 2000, pp. 2072-2075
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
10
Year of publication
2000
Pages
2072 - 2075
Database
ISI
SICI code
0031-9007(20000306)84:10<2072:GSLICF>2.0.ZU;2-0
Abstract
A classical and quantum mechanical generalized second law of thermodynamics in cosmology implies constraints on the effective equation of state of the universe in the form of energy conditions, obeyed by many known cosmologic al solutions, forbids certain cosmological singularities, and is compatible with entropy bounds. This second law is based on the conjecture that causa l boundaries and not only event horizons have geometric entropies proportio nal to their area. In string cosmology the second law provides new informat ion about nonsingular solutions.