A closer look at the cosmological implications of the Lambda HDE model
文献类型：期刊论文
| 作者 | Li, M ; Wen, SX; Zhou, LJ; Wang, S; Wang, S (reprint author), Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China.
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2017 |
| 卷号 | 467期号:1页码:961-970 |
| 关键词 | Cosmological Parameters Cosmology: Observations Dark Energy |
| DOI | http://dx.doi.org/10.1093/mnras/stx146 |
| 英文摘要 | In 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. |
| 学科主题 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22071]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Wang, S (reprint author), Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, M,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 | Li, M,Wen, SX,Zhou, LJ,Wang, S,&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 | Li, M,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. |
入库方式： OAI收割
来源：理论物理研究所
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