The generalized second law of thermodynamics in the accelerating universe

Details The generalized second law of thermodynamics in the accelerating universe The generalized second law of thermodynamics in the accelerating universe

2007-05-09

arxiv.org/abs/0705.1264v2

Phys.Lett.B652:86-91,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, 6 figures, revised version, accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2007.06.067

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.

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