English

Thermodynamics of apparent horizon in modified FRW universe with power-law corrected entropy

General Physics 2011-09-07 v2 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Abstract

We derive the modified Friedmann equation corresponding to the power-law corrected entropy-area relation SA=A4[1KαA1α2]S_{\rm A}=\frac{A}{4}[1-K_{\alpha} A^{1-\frac{\alpha}{2}}] which is motivated by the entanglement of quantum fields in and out of the apparent horizon. We consider a non-flat modified FRW universe containing an interacting viscous dark energy with dark matter and radiation. For the selected model, we study the effect of the power-law correction term to the entropy on the dynamics of dark energy. Furthermore, we investigate the validity of the generalized second law (GSL) of gravitational thermodynamics on the apparent horizon and conclude that the GSL is satisfied for α<2\alpha<2.

Keywords

Cite

@article{arxiv.1009.3833,
  title  = {Thermodynamics of apparent horizon in modified FRW universe with power-law corrected entropy},
  author = {K. Karami and A. Abdolmaleki and N. Sahraei and S. Ghaffari},
  journal= {arXiv preprint arXiv:1009.3833},
  year   = {2011}
}

Comments

12 pages, Accepted for Publication in JHEP