Viscous Ricci Dark Energy
Cosmology and Nongalactic Astrophysics
2009-09-25 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We investigate the viscous Ricci dark energy (RDE) model by assuming that there is bulk viscosity in the linear barotropic fluid and the RDE. In the RDE model without bulk viscosity, the universe is younger than some old objects at some redshifts. Since the age of the universe should be longer than any objects in the universe, the RDE model suffers the age problem, especially when we consider the object APM 08279+5255 at , whose age is Gyr. In this letter, we find that once the viscosity is taken into account, this age problem is alleviated.
Keywords
Cite
@article{arxiv.0905.0527,
title = {Viscous Ricci Dark Energy},
author = {Chao-Jun Feng and Xin-Zhou Li},
journal= {arXiv preprint arXiv:0905.0527},
year = {2009}
}
Comments
4 pages, 3 figures