Variable cosmological constant model: The reconstruction equations and constraints from current observational data
文献类型：期刊论文
| 作者 | Ma, Yin-Zhe; Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, KITPC, POB 2735, Beijing 100080, Peoples R China |
| 刊名 | NUCLEAR PHYSICS B
 |
| 出版日期 | 2008 |
| 卷号 | 804期号:40910页码:262-285 |
| 关键词 | Dark Energy Quantum-gravity Lambda-term Holographic Quintessence Accelerating Universe Coupled Quintessence Vacuum Energy Of-state Consequences Supernovae |
| ISSN号 | 0550-3213 |
| 英文摘要 | In this paper we first give a brief review of the variable cosmological constant model and its scalar field description. We mainly discuss two types of variable cosmological constant models: a power law and H power law models. A method to obtain all of the equivalent scalar field potentials and the effective equation of state of the two models is presented. In addition, the dynamics of such scalar field potentials and effective equation of state are discussed in detail. The parameters of the two models are constrained by current 307 high-quality "Union" SN Ia data set, baryon acoustic oscillation (BAO) measurement from the Sloan Digital Sky Survey (SDSS), 9 observational H (Z) data derived from the Gemini Deep Deep Survey (GDDS) and the shift parameter of the cosmic microwave background (CMB) given by the three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations. We also calculate and draw the picture of the Hubble parameter, the deceleration parameter and the matter density of the two models. Then, we show that the indices m and n in the two models have specific meaning in determining properties of the models. Moreover, the reasons that indices m and it may also influence the behavior of effective equation of state and scalar field potentials are presented. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000259648900010 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5436]  |
| 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 | Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, KITPC, POB 2735, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yin-Zhe,Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, KITPC, POB 2735, Beijing 100080, Peoples R China. Variable cosmological constant model: The reconstruction equations and constraints from current observational data[J]. NUCLEAR PHYSICS B,2008,804(40910):262-285. |
| APA | Ma, Yin-Zhe,&Ma, YZ , Chinese Acad Sci, Inst Theoret Phys, KITPC, POB 2735, Beijing 100080, Peoples R China.(2008).Variable cosmological constant model: The reconstruction equations and constraints from current observational data.NUCLEAR PHYSICS B,804(40910),262-285. |
| MLA | Ma, Yin-Zhe,et al."Variable cosmological constant model: The reconstruction equations and constraints from current observational data".NUCLEAR PHYSICS B 804.40910(2008):262-285. |
入库方式： OAI收割
来源：理论物理研究所
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