Journal
EPL
Volume 98, Issue 3, Pages -Publisher
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/98/30010
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- Research Institute for Astronomy and Astrophysics of Maragha (RIAAM) [1/2342]
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We investigate the generalized second law (GSL) of thermodynamics in the framework of f(R)-gravity. We consider a FRW universe filled only with ordinary matter enclosed by the dynamical apparent horizon with the Hawking temperature. For a viable modified gravity model as f(R) = R - alpha/R + beta R-2, we examine the validity of the GSL during the early-inflation and late-acceleration eras. Our results show that for the selected f(R)-gravity model minimally coupled with matter, the GSL in the early-inflation epoch is satisfied only for the special range of the equation-of-state parameter of matter. But in the late-acceleration regime, the GSL is always respected. Copyright (C) EPLA, 2012
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