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Thermodynamic behavior of particular f(R,T)-gravity models

Journal of Experimental and Theoretical Physics volume 117, pages 248–257 (2013)Cite this article

Abstract

We investigate the thermodynamics at the apparent horizon of the FRW universe in f(R, T) theory in the nonequilibrium description. The laws of thermodynamics are discussed for two particular models of the f(R, T) theory. The first law of thermodynamics is expressed in the form of the Clausius relation \(T_h d\hat S_h = \delta Q\), where δQ is the energy flux across the horizon and \(d\hat S\) is the entropy production term. Furthermore, the conditions for the generalized second law of thermodynamics to be preserved are established with the constraints of positive temperature and attractive gravity. We illustrate our results for some concrete models in this theory.

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Authors and Affiliations

  1. Department of Mathematics, University of the Punjab Quaid-e-Azam Campus, Lahore, 54590, Pakistan

    M. Sharif & M. Zubair

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  1. M. Sharif
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Sharif, M., Zubair, M. Thermodynamic behavior of particular f(R,T)-gravity models. J. Exp. Theor. Phys. 117, 248–257 (2013). https://doi.org/10.1134/S1063776113100075

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  • DOI: https://doi.org/10.1134/S1063776113100075

Keywords

  • Gravity Model
  • Horizon Entropy
  • Wald Entropy
  • Gravitational Coupling Constant
  • Clausius Relation