TY - JOUR
T1 - Observational H (z) data and cosmological models
AU - Wei, Hao
AU - Zhang, Shuang Nan
PY - 2007/1/4
Y1 - 2007/1/4
N2 - In this work, we confront ten cosmological models with observational H (z) 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 H (z) and EoS, with the EoS crossing -1 around redshift z ∼ 1.5.
AB - In this work, we confront ten cosmological models with observational H (z) 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 H (z) and EoS, with the EoS crossing -1 around redshift z ∼ 1.5.
UR - http://www.scopus.com/inward/record.url?scp=33845219642&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2006.11.027
DO - 10.1016/j.physletb.2006.11.027
M3 - Article
AN - SCOPUS:33845219642
SN - 0370-2693
VL - 644
SP - 7
EP - 15
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1
ER -