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Zhang, ZH; Li, M; Li, XD; Wang, S; Zhang, WS; Li, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
GENERALIZED HOLOGRAPHIC DARK ENERGY AND ITS OBSERVATIONAL CONSTRAINTS
发表期刊MODERN PHYSICS LETTERS A
语种英语
关键词Hubble-space-telescope Yang-mills Condensate Brans-dicke Theory Bvri Light Curves Cosmological Constant Ia Supernovae Black-holes Accelerating Universe Statefinder Diagnosis Entropy Bounds
摘要In the original holographic dark energy (HDE) model, the dark energy density is proposed to be rho(de) = 3c(2)M(P)(2)L(-2), with c a dimensionless constant characterizing the properties of the HDE. In this work, we propose the generalized holographic dark energy (GHDE) model by considering the parameter c as a redshift-dependent function c(z). We derive all the physical quantities of the GHDE model analytically, and fit the c(z) by trying four kinds of parametrizations. The cosmological constraints of the c(z) are obtained from the joint analysis of the present SNLS3+BAO+CMB+H-0 data. We find that, compared with the original HDE model, the GHDE models can provide a better fit to the data. For example, the GHDE model with JBP-type c(z) can reduce the chi(2)(min) of the HDE model by 2.16. We also find that, unlike the original HDE model with a phantom-like behavior in the future, the GHDE models can present many more different possibilities, i.e. it allows the GHDE in the future to be either quintessence-like, cosmological constant-like, or phantom-like, depending on the forms of c(z).
2012
ISSN0217-7323
卷号27期号:20页码:1250115
学科领域Physics
收录类别SCI
项目资助者NSFC [10535060, 10975172, 10821504]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504]; 973 program of the Ministry of Science and Technology of China [2007CB815401]
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被引频次:17[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/311006/15076
专题理论物理所科研产出_SCI论文
通讯作者Li, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
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GB/T 7714
Zhang, ZH,Li, M,Li, XD,et al. GENERALIZED HOLOGRAPHIC DARK ENERGY AND ITS OBSERVATIONAL CONSTRAINTS[J]. MODERN PHYSICS LETTERS A,2012,27(20):1250115.
APA Zhang, ZH,Li, M,Li, XD,Wang, S,Zhang, WS,&Li, XD .(2012).GENERALIZED HOLOGRAPHIC DARK ENERGY AND ITS OBSERVATIONAL CONSTRAINTS.MODERN PHYSICS LETTERS A,27(20),1250115.
MLA Zhang, ZH,et al."GENERALIZED HOLOGRAPHIC DARK ENERGY AND ITS OBSERVATIONAL CONSTRAINTS".MODERN PHYSICS LETTERS A 27.20(2012):1250115.
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