Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter

doi:http://dx.doi.org/10.1007/s11433-016-0038-9

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	Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter
	Zhou, LJ ; Wang, S 1
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2016
卷号	59 期号:7 页码:670411
关键词	dark energy HOLOGRAPHIC DARK ENERGY cosmology COSMOLOGICAL CONSTRAINTS cosmological constant ACCELERATING UNIVERSE TRANSITION SUPERNOVAE INFLATION EQUATION STATE BETA
DOI	http://dx.doi.org/10.1007/s11433-016-0038-9
英文摘要	Recently, 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.
学科主题	Physics
语种	英语
资助机构	National Natural Science Foundation of China [11405024]
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23096]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 2.Sun Yat Sen Univ, Sch Astron & Space Sci, Guangzhou 510275, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhou, LJ,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.(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.