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Wang, S; Wen, SX; Zhou, LJ; Li, M; Wang, S (reprint author), Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China.
A closer look at the cosmological implications of the Lambda HDE model
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Language英语
KeywordCosmological Parameters Cosmology: Observations Dark Energy
AbstractIn a previous paper, we proposed a heterotic dark energy model, called Lambda holographic dark energy (Lambda HDE), in which dark energy is composed of two components: cosmological constant (CC) and HDE. The aim of this work is to give a more comprehensive and systematic investigation on the cosmological implications of the Lambda HDE model. First, we make use of the current observations to constrain the Lambda HDE model, and compare its cosmology-fit results with the results of the Lambda cold dark matter (Lambda CDM) and the HDE model. Then, by combining a qualitative theoretical analysis with a quantitative numerical study, we discuss the impact of considering curvature on the cosmic evolutions of fractional HDE density Omega(hde) and fractional CC density Omega(Lambda), as well as on the ultimate cosmic fate. Finally, we explore the effects of adopting different types of observational data. We find that: (1) the current observational data cannot distinguish the Lambda HDE model from the Lambda CDM and the HDE model; this indicates that dark energy (DE) may contain multiple components. (2) The asymptotic solution of Omega(hde) and the corresponding cosmic fate in a flat universe can be extended to the case of a non- flat universe; moreover, compared with the case of a flat universe, considering curvature will make HDE closer to a phantom DE. (3) Compared with Joint Light-curve Analysis (JLA) data set, Supernova Legacy Survey three- years (SNLS3) data more favour a phantom type HDE; in contrast, using other types of observational data have no significant impact on the cosmic evolutions of the Lambda HDE model.
2017
Volume467Issue:1Pages:961-970
Subject AreaAstronomy & Astrophysics
DOIhttp://dx.doi.org/10.1093/mnras/stx146
Funding OrganizationNational Natural Science Foundation of China [11405024, 11275247, 11335012] ; National Natural Science Foundation of China [11405024, 11275247, 11335012] ; National Natural Science Foundation of China [11405024, 11275247, 11335012] ; National Natural Science Foundation of China [11405024, 11275247, 11335012] ; Fundamental Research Funds for the Central Universities [16lgpy50] ; Fundamental Research Funds for the Central Universities [16lgpy50] ; Fundamental Research Funds for the Central Universities [16lgpy50] ; Fundamental Research Funds for the Central Universities [16lgpy50] ; Sun Yat-Sen University [985] ; Sun Yat-Sen University [985] ; Sun Yat-Sen University [985] ; Sun Yat-Sen University [985]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/22071
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWang, S (reprint author), Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China.
Recommended Citation
GB/T 7714
Wang, S,Wen, SX,Zhou, LJ,et al. A closer look at the cosmological implications of the Lambda HDE model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,467(1):961-970.
APA Wang, S,Wen, SX,Zhou, LJ,Li, M,&Wang, S .(2017).A closer look at the cosmological implications of the Lambda HDE model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,467(1),961-970.
MLA Wang, S,et al."A closer look at the cosmological implications of the Lambda HDE model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 467.1(2017):961-970.
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