English

Behaviour of interacting Ricci dark energy in logarithmic f(T) gravity

General Physics 2012-10-22 v1

Abstract

In the present work we have considered a modified gravity dubbed as "logarithmic f(T)f(T) gravity" and investigated the behavior of Ricci dark energy interacting with pressureless dark matter. We have chosen the interaction term in the form QHδρmQ\propto H\delta\rho_{m} and investigated the behavior of the Hubble parameter HH as a function of the redshift zz. For this reconstructed HH we have investigated the behavior of the density of the Ricci dark energy ρRDE\rho_{RDE} and density contribution due to torsion ρT\rho_{T}. All of the said cosmological parameters are seen to have increasing behavior from higher to lower redshifts for all values of c2c^{2} pertaining to the Ricci dark energy. Subsequently, we observed the equation of state parameter wRDEw_{RDE} in this situation. The equation of state parameter is found to behave like phantom for all choices of c2c^{2} in the Ricci dark energy.

Keywords

Cite

@article{arxiv.1210.4612,
  title  = {Behaviour of interacting Ricci dark energy in logarithmic f(T) gravity},
  author = {Rahul Ghosh and Surajit Chattopadhyay},
  journal= {arXiv preprint arXiv:1210.4612},
  year   = {2012}
}

Comments

9 pages, 7 figures