The generalized second law of thermodynamics for interacting $f(R)$ gravity
General Relativity and Quantum Cosmology
2015-06-22 v1
Abstract
We examine the validity of the generalized second law (GSL) of gravitational thermodynamics in the context of interacting gravity. We take into account that the boundary of the universe to be confined by the dynamical apparent horizon in a flat FRW universe. We study the effective equation of state, deceleration parameter and GSL in this interaction-framework. We find that the evolution of the total entropy increases through the interaction term. As a example, we consider a gravity with a power-law dependence on the curvature . Here, we find exact solutions for a model in which the interaction term is related to the total energy density of matter.
Keywords
Cite
@article{arxiv.1406.6305,
title = {The generalized second law of thermodynamics for interacting $f(R)$ gravity},
author = {Ramon Herrera and Nelson Videla},
journal= {arXiv preprint arXiv:1406.6305},
year = {2015}
}
Comments
19 pages, 3 figures. arXiv admin note: text overlap with arXiv:1401.8283