2014/02/18 by Antonio Pasqua, Surajit Chattopadhyay, Martiros Khurshudyan +3
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1007/s10773-014-2291-6
arXiv admin note: text overlap with arXiv:1101.1774 by other authors
arxiv created 2014/02/18 · arxiv updated 2015/06/19
In this work, we studied the Power Law and the Logarithmic Entropy Corrected versions of the Ricci Dark Energy (RDE) model in a spatially non-flat universe and in the framework of Hořava-Lifshitz cosmology. For the two cases containing non-interacting and interacting RDE and Dark Matter (DM), we obtained the exact differential equation that determines the evolutionary form of the RDE energy density parameter. Moreover, we obtained the expressions of the deceleration parameter q and, using a parametrization of the equation of state (EoS) parameter ωD as ωD(z)=ω0+ω1 z, we derived the expressions of both ω0 and ω1. We interestingly found that the expression of ω0 is the same for both non-interacting and interacting case. The expression of ω1 for the interacting case has strong dependence from the interacting parameter b2. The parameters derived in this work are done in small redshift approximation and for low redshift expansion of the EoS parameter.