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Features of holographic dark energy under combined cosmological constraints
Ma, Yin-Zhe; Gong, Yan; Chen, Xuelei; Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, POB 2735, Beijing 100080, Peoples R China
2009
发表期刊EUROPEAN PHYSICAL JOURNAL C
ISSN1434-6044
卷号60期号:2页码:303-315
摘要We investigate the observational signatures of the holographic dark-energy models, including both the original model and a model with an interaction term between the dark energy and dark matter. We first delineate the dynamical behavior of such models, especially considering whether they would have a "big rip" for different parameters; then we use several recent observations, including 182 high-quality type Ia supernovae data observed with the Hubble Space Telescope, the SNLS and ESSENCE surveys, 42 latest Chandra X-ray cluster gas mass fraction, 27 high redshift gamma-ray burst samples, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey, and the CMB shift parameter from the WMAP three-year result to give more reliable and tighter constraints on the holographic dark-energy models. The results of our constraints for the holographic dark-energy model without interaction c = 0.748(-0.009)(+0.108), Omega(m0) = 0.276(-0.016)(+0.017), and for the model with interaction (c = 0.692(-0.107)(+0.135), Omega(m0) = 0.281(-0.017)(+0.017), alpha = -0.006(-0.024)(+0.021), where alpha is an interacting parameter). As these use the Bayesian Evidence as a model-selection criterion to make comparisons. We found that the holographic darkenergy models are mildly favored by the observations as compared to the Lambda CDM model.
部门归属[Ma, YZ; Chen, XL] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100080, Peoples R China; [Ma, YZ] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England; [Gong, Y; Chen, XL] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
关键词Gamma-ray Bursts Relaxed Galaxy Clusters Probe Wmap Observations Light-curve Shapes Equation-of-state Model Selection Black-holes Entropy Bounds Ia Supernovae Parameters
学科领域Physics
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收录类别SCI
WOS记录号WOS:000264493500014
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被引频次:61[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/311006/5368
专题理论物理所1978-2010年知识产出
通讯作者Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, POB 2735, Beijing 100080, Peoples R China
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Ma, Yin-Zhe,Gong, Yan,Chen, Xuelei,et al. Features of holographic dark energy under combined cosmological constraints[J]. EUROPEAN PHYSICAL JOURNAL C,2009,60(2):303-315.
APA Ma, Yin-Zhe,Gong, Yan,Chen, Xuelei,&Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, POB 2735, Beijing 100080, Peoples R China.(2009).Features of holographic dark energy under combined cosmological constraints.EUROPEAN PHYSICAL JOURNAL C,60(2),303-315.
MLA Ma, Yin-Zhe,et al."Features of holographic dark energy under combined cosmological constraints".EUROPEAN PHYSICAL JOURNAL C 60.2(2009):303-315.
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