The generalized second law of thermodynamics in the accelerating universe
Abstract
We show that in the accelerating universe the generalized second law of thermodynamics holds only in the case where the enveloping surface is the apparent horizon, but not in the case of the event horizon. The present analysis relies on the most recent SNe Ia events, being model independent. Our study might suggest that event horizon is not a physical boundary from the point of view of thermodynamics.
- Publication:
-
Physics Letters B
- Pub Date:
- August 2007
- DOI:
- 10.1016/j.physletb.2007.06.067
- arXiv:
- arXiv:0705.1264
- Bibcode:
- 2007PhLB..652...86Z
- Keywords:
-
- 98.80.Cq;
- 98.80.-k;
- Particle-theory and field-theory models of the early Universe;
- Cosmology;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 12 pages, 6 figures, revised version, accepted for publication in Phys. Lett. B