The generalized second law of thermodynamics for the interacting in $f(T)$ gravity

Abstract

We study the validity of the generalized second law (GSL) of gravitational thermodynamics in a non-flat FRW universe containing the interacting in $f(T)$ gravity. We consider that the boundary of the universe to be confined by the dynamical apparent horizon in FRW universe. In general, we discuss the effective equation of state, deceleration parameter and GLS in this framewok. Also, we find that the interacting-term $Q$ modifies these quantities and in particular, the evolution of the total entropy, results in an increases on the GLS of thermodynamic, by a factor $4\pi R_A^{3}Q/3$. By using a viable $f(T)$ gravity with an exponential dependence on the torsion, we develop a model where the interaction term is related to the total energy density of matter. Here, we find that a crossing of phantom divide line is possible for the interacting-$f(T)$ model.

16 pages and 3 figures. Astrophys.Space Sci. in press

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Cited by in corpus (2)

• Generalized second law of thermodynamics in f(R,T) theory of gravity
• The generalized second law of thermodynamics for interacting $f(R)$ gravity