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Zhang, Xin; Wu, Feng-Quan; Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations
Source PublicationPHYSICAL REVIEW D
KeywordEquation-of-state High-redshift Supernovae Probe Wmap Observations Hubble-space-telescope Cosmological Constant Black-holes Coupled Quintessence Entropy Bounds Model Coincidence
AbstractThe holographic dark energy model is proposed by Li as an attempt for probing the nature of dark energy within the framework of quantum gravity. The main characteristic of holographic dark energy is governed by a numerical parameter c in the model. The parameter c can only be determined by observations. Thus, in order to characterize the evolving feature of dark energy and to predict the fate of the Universe, it is of extraordinary importance to constrain the parameter c by using the currently available observational data. In this paper, we derive constraints on the holographic dark energy model from the latest observational data including the gold sample of 182 type Ia supernovae (SNIa), the shift parameter of the cosmic microwave background (CMB) given by the three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations, and the baryon acoustic oscillation (BAO) measurement from the Sloan Digital Sky Survey (SDSS). The joint analysis gives the fit results in 1-sigma: c=0.91(-0.18)(+0.26) and Omega(m0)=0.29 +/- 0.03. That is to say, though the possibility of c < 1 is more favored, the possibility of c > 1 cannot be excluded in one-sigma error range, which is somewhat different from the result derived from previous investigations using earlier data. So, according to the new data, the evidence for the quintom feature in the holographic dark energy model is not as strong as before.
2007
ISSN1550-7998
Volume76Issue:2Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:222[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5707
CollectionSCI期刊论文
Corresponding AuthorZhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xin,Wu, Feng-Quan,Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations[J]. PHYSICAL REVIEW D,2007,76(2):-.
APA Zhang, Xin,Wu, Feng-Quan,&Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.(2007).Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations.PHYSICAL REVIEW D,76(2),-.
MLA Zhang, Xin,et al."Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations".PHYSICAL REVIEW D 76.2(2007):-.
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