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Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations
Zhang, Xin; Wu, Feng-Quan; Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2007
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号76期号:2页码:-
摘要The 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.
部门归属Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Equation-of-state High-redshift Supernovae Probe Wmap Observations Hubble-space-telescope Cosmological Constant Black-holes Coupled Quintessence Entropy Bounds Model Coincidence
学科领域Physics
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收录类别SCI
WOS记录号WOS:000248545200011
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被引频次:205[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5707
专题理论物理所1978-2010年知识产出
通讯作者Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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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[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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