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题名: Diagnosing Lambda HDE model with statefinder hierarchy and fractional growth parameter
作者: Zhou, LJ ;  Wang, S
刊名: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期: 2016
卷号: 59, 期号:7, 页码:670411
关键词: dark energy ;  cosmology ;  cosmological constant
学科分类: Physics
DOI: http://dx.doi.org/10.1007/s11433-016-0038-9
通讯作者: Wang, S (reprint author), Sun Yat Sen Univ, Sch Astron & Space Sci, Guangzhou 510275, Guangdong, Peoples R China.
文章类型: Article
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.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: HOLOGRAPHIC DARK ENERGY ;  COSMOLOGICAL CONSTRAINTS ;  ACCELERATING UNIVERSE ;  TRANSITION ;  SUPERNOVAE ;  INFLATION ;  EQUATION ;  STATE ;  BETA
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11405024]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21606
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
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.
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