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题名: Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations
作者: Zhang, Xin ;  Wu, Feng-Quan
刊名: PHYSICAL REVIEW D
出版日期: 2007
卷号: 76, 期号:2, 页码:-
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
学科分类: Physics
通讯作者: Zhang, X , Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000248545200011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5707
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Zhang, Xin,Wu, Feng-Quan. Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations[J]. PHYSICAL REVIEW D,2007,76(2):-.
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