2012/07/31 by Rahul Ghosh, Antonio Pasqua, Surajit Chattopadhyay
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1140/epjp/i2013-13012-6
published as Eur. Phys. J. Plus (2013) 128: 12 · 12 pages, 17 figures. arXiv admin note: text overlap with arXiv:1201.2511 by other authors
arxiv created 2012/11/24 · arxiv updated 2013/11/22
The present study is motivated by the study of reference [1], where the generalized second law of thermodynamics has been investigated for a flat FRW universe for two viable models of f(T) gravity. In the present work, we have considered a non-flat universe and accordingly studied the behaviors of equation of state parameter and deceleration parameter. Subsequently, using the first law of thermodynamics we derived the expressions for the time derivative of the total entropy of a universe enveloped by apparent horizon. In the next phase, with the choice of scale factor pertaining to an emergent universe we have investigated the sign of the time derivatives of total entropy for three viable models of f(T) gravity.