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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
Source PublicationMODERN PHYSICS LETTERS A
Language英语
KeywordHubble-space-telescope Yang-mills Condensate Brans-dicke Theory Bvri Light Curves Cosmological Constant Ia Supernovae Black-holes Accelerating Universe Statefinder Diagnosis Entropy Bounds
AbstractIn 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
Volume27Issue:20Pages:1250115
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNSFC [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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Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15076
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLi, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
Recommended Citation
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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