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The generalized second law of thermodynamics in the accelerating universe

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arxiv 0705.1264 v2 pith:CH3VNYUM submitted 2007-05-09 gr-qc hep-th

The generalized second law of thermodynamics in the accelerating universe

classification gr-qc hep-th
keywords horizonthermodynamicsacceleratingcaseeventgeneralizedseconduniverse
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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