Thermodynamics in f(R,T) theory of gravity
A non-equilibrium picture of thermodynamics is discussed at the apparent horizon of FRW universe in f(R,T) gravity, where R is the Ricci scalar and T is the trace of the energy-momentum tensor. We take two forms of the energy-momentum tensor of dark components and demonstrate that equilibrium description of thermodynamics is not achievable in both cases. We check the validity of the first and second law of thermodynamics in this scenario. It is shown that the Friedmann equations can be expressed in the form of first law of thermodynamics T{sub h}dS'{sub h}+T{sub h}d{sub jmath}S' = −dE'+W'dV, where d{sub jmath}S' is the entropy production term. Finally, we conclude that the second law of thermodynamics holds both in phantom and non-phantom phases.
- OSTI ID:
- 22280094
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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