Probing the curvature and dark energy
文献类型：期刊论文
| 作者 | Gong, YG; Zhang, YZ ; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2005 |
| 卷号 | 72期号:4页码:- |
| 关键词 | Hubble-space-telescope Cosmological Constant Cosmic Acceleration Supernova Constraints Universe Model Quintessence Redshift Equation |
| ISSN号 | 1550-7998 |
| 英文摘要 | Two new one-parameter tracking behavior dark energy representations omega=omega(0)/(1+z) and omega=omega(0)e(z/(1+z))/(1+z) are used to probe the geometry of the Universe and the property of dark energy. The combined type Ia supernova, Sloan Digital Sky Survey, and Wilkinson Microwave Anisotropy Probe data indicate that the Universe is almost spatially flat and that dark energy contributes about 72% of the matter content of the present universe. The observational data also tell us that omega(0)similar to-1. It is argued that the current observational data can hardly distinguish different dark energy models to the zeroth order. The transition redshift when the expansion of the Universe changed from deceleration phase to acceleration phase is around z(T)similar to 0.6 by using our one-parameter dark energy models. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000231565000032 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13774]  |
| 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 | Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Gong, YG,Zhang, YZ,Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.. Probing the curvature and dark energy[J]. PHYSICAL REVIEW D,2005,72(4):-. |
| APA | Gong, YG,Zhang, YZ,&Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China..(2005).Probing the curvature and dark energy.PHYSICAL REVIEW D,72(4),-. |
| MLA | Gong, YG,et al."Probing the curvature and dark energy".PHYSICAL REVIEW D 72.4(2005):-. |
入库方式： OAI收割
来源：理论物理研究所
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