Thermodynamical description of the interaction between holographic dark energy and dark matter

Details Thermodynamical description of the interaction between holographic dark energy and dark matter Thermodynamical description of the interaction between holographic dark energy and dark matter

2007-11-14

arxiv.org/abs/0711.2214v2

Phys.Lett.B662:1-6,2008

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 4 figures, to be published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2008.01.074

We present a thermodynamical description of the interaction between holographic dark energy and dark matter. If holographic dark energy and dark matter evolve separately, each of them remains in thermodynamic equilibrium. A small interaction between them may be viewed as a stable thermal fluctuation that brings a logarithmic correction to the equilibrium entropy. From this correction we obtain a physical expression for the interaction which is consistent with phenomenological descriptions and passes reasonably well the observational tests.

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