Observational $H(z)$ Data and Cosmological Models
Astrophysics
2010-04-05 v3 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
In this work, we confront ten cosmological models with observational data. The possible interaction between dark energy and dust matter is allowed in some of these models. Also, we consider the possibility of (effective) equation-of-state parameter (EoS) crossing -1. We find that the best models have an oscillating feature for both and EoS, with the EoS crossing -1 around redshift .
Keywords
Cite
@article{arxiv.astro-ph/0609597,
title = {Observational $H(z)$ Data and Cosmological Models},
author = {Hao Wei and Shuang Nan Zhang},
journal= {arXiv preprint arXiv:astro-ph/0609597},
year = {2010}
}
Comments
14 pages, Latex2e; v2: discussions and references added, Phys. Lett. B in press; v3: published version