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题名: GENERALIZED HOLOGRAPHIC DARK ENERGY AND ITS OBSERVATIONAL CONSTRAINTS
作者: Zhang, ZH ;  Li, M ;  Li, XD ;  Wang, S ;  Zhang, WS
刊名: MODERN PHYSICS LETTERS A
出版日期: 2012
卷号: 27, 期号:20, 页码:1250115
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
学科分类: Physics
通讯作者: Li, XD (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
部门归属: [Zhang, Zhenhui; Li, Xiao-Dong; Wang, Shuang; Zhang, Wen-Shuai] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China; [Zhang, Zhenhui; Li, Miao; Li, Xiao-Dong; Wang, Shuang; Zhang, Wen-Shuai] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Li, Miao] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Li, Miao] Chinese Acad Sci, State Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, Xiao-Dong] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Peoples R China
英文摘要: 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).
资助者: NSFC [10535060, 10975172, 10821504]; 973 program of the Ministry of Science and Technology of China [2007CB815401]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000305907000006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15076
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
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.
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