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arXiv · 1005.5234

Thermodynamics in $f(R)$ gravity in the Palatini formalism

Kazuharu Bamba·Chao-Qiang Geng
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Abstract

We investigate thermodynamics of the apparent horizon in $f(R)$ gravity in the Palatini formalism with non-equilibrium and equilibrium descriptions. We demonstrate that it is more transparent to understand the horizon entropy in the equilibrium framework than that in the non-equilibrium one. Furthermore, we show that the second law of thermodynamics can be explicitly verified in both phantom and non-phantom phases for the same temperature of the universe outside and inside the apparent horizon.

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Kazuharu Bamba, Chao-Qiang Geng. 2010-05-28. Thermodynamics in $f(R)$ gravity in the Palatini formalism. https://doi.org/10.1088/1475-7516/2010/06/014

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