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Zhou, LJ; Wang, S; Wang, S (reprint author), Sun Yat Sen Univ, Sch Astron & Space Sci, Guangzhou 510275, Guangdong, Peoples R China.
Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Language英语
KeywordDark Energy Cosmology Cosmological Constant
AbstractRecently, a new dark energy model called Lambda HDE was proposed. In this model, dark energy consists of two parts: cosmological constantand holographic dark energy (HDE). Two key parameters of this model are the fractional density of cosmological constant Omega(Lambda 0), and the dimensionless HDE parameter c. Since these two parameters determine the dynamical properties of DE and the destiny of universe, it is important to study the impacts of different values of Omega(Lambda 0) and c on the Lambda HDE model. In this paper, we apply various DE diagnostic tools to diagnose Lambda HDE models with different values of Omega(Lambda 0) and c; these tools include statefinder hierarchy {S-3((1)), S-4((1))}, fractional growth parameter epsilon, and composite null diagnostic (CND), which is a combination of {S-3((1)), S-4((1))} and epsilon. We find that: (1) adopting different values of Omega(Lambda 0) only has quantitative impacts on the evolution of the Lambda HDE model, while adopting different c has qualitative impacts; (2) compared with S-3((1)), S-4((1)) can give larger differences among the cosmic evolutions of the Lambda HDE model associated with different Omega(Lambda 0) or different c; (3) compared with the case of using a single diagnostic, adopting a CND pair has much stronger ability to diagnose the Lambda HDE model.
2016
Volume59Issue:7Pages:670411
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1007/s11433-016-0038-9
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11405024] ; National Natural Science Foundation of China [11405024] ; National Natural Science Foundation of China [11405024] ; National Natural Science Foundation of China [11405024]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21606
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWang, S (reprint author), Sun Yat Sen Univ, Sch Astron & Space Sci, Guangzhou 510275, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Zhou, LJ,Wang, S,Wang, S . Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(7):670411.
APA Zhou, LJ,Wang, S,&Wang, S .(2016).Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(7),670411.
MLA Zhou, LJ,et al."Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.7(2016):670411.
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