Entropy and statefinder diagnosis in chameleon cosmology

Details Entropy and statefinder diagnosis in chameleon cosmology Entropy and statefinder diagnosis in chameleon cosmology

2011-06-09

arxiv.org/abs/1106.1764v1

Astrophys Space Sci (2011) 335:629-634

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 5 figures. will be published in Astrophys. Space Sci

Scientific paper

In this paper, the generalized second law (GSL) of thermodynamics and entropy is revisited in the context of cosmological models with bouncing behavior such as chameleon cosmology where the boundary of the universe is assumed to be enclosed by the dynamical apparent horizon. From a thermodynamic point of view, to link between thermodynamic and geometric parameters in cosmological models, we introduce "entropy rate of change multiplied by the temperature" as a model independent thermodynamic state parameter together with the well known $\{r,s \}$ statefinder to differentiate the dark energy models.

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