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Article overview
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Constraining interacting dark energy with observational $H(z)$ data | | Shuo Cao
; Nan Liang
; Zong-Hong Zhu
; | | Date: |
31 May 2011 | | Abstract: | We investigate observational constraints on two interacting dark energy
models with the newly revised $H(z)$ data, as well as the cosmic microwave
background (CMB) observation from the Wilkinson Microwave Anisotropy Probe
(WMAP7) results, the baryonic acoustic oscillation (BAO) observation from the
spectroscopic Sloan Digital Sky Survey (SDSS) Data Release and the Union2 SNe
Ia set, by using the Markov Chain Monte Carlo (MCMC) method. For the
$gamma_m$IDE and $gamma_d$IDE models, the special case ($gamma_m=0$
($gamma_d=0$), $w_X=-1$, corresponding to the $Lambda$CDM with no
interaction) is excluded at $1sigma$ with $H(z)$+BAO+CMB, while the joint
analysis with SNe Ia+BAO+CMB and $H(z)$+SNe Ia+BAO+CMB indicates that the
$Lambda$CDM model is still included within $1sigma$ error region. | | Source: | arXiv, 1105.6274 | | Services: | Forum | Review | PDF | Favorites | |
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