Thermodynamics of dark energy interacting with dark matter and radiation

Details Thermodynamics of dark energy interacting with dark matter and radiation Thermodynamics of dark energy interacting with dark matter and radiation

2009-10-05

arxiv.org/abs/0910.0822v3

Phys.Rev.D81:023007,2010

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, version published in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.81.023007

We investigate the validity of the generalized second law of thermodynamics, in the cosmological scenario where dark energy interacts with both dark matter and radiation. Calculating separately the entropy variation for each fluid component and for the apparent horizon itself, we show that the generalized second law is always and generally valid, independently of the specific interaction form, of the fluids equation-of-state parameters and of the background geometry.

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