Examining the Evidence for Dynamical Dark Energy
文献类型：期刊论文
| 作者 | Zhao, GB; Crittenden, RG; Pogosian, L; Zhang, XM;张新民 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 109期号:17页码:171301 |
| 英文摘要 | We apply a new nonparametric Bayesian method for reconstructing the evolution history of the equation of state w of dark energy, based on applying a correlated prior for w(z), to a collection of cosmological data. We combine the latest supernova (SNLS 3 year or Union 2.1), cosmic microwave background, redshift space distortion, and the baryonic acoustic oscillation measurements (including BOSS, WiggleZ, and 6dF) and find that the cosmological constant appears consistent with current data, but that a dynamical dark energy model which evolves from w < -1 at z similar to 0.25 to w > -1 at higher redshift is mildly favored. Estimates of the Bayesian evidence show little preference between the cosmological constant model and the dynamical model for a range of correlated prior choices. Looking towards future data, we find that the best fit models for current data could be well distinguished from the Lambda CDM model by observations such as Planck and Euclid-like surveys. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000310261200003 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224660]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Zhao, GB,Crittenden, RG,Pogosian, L,et al. Examining the Evidence for Dynamical Dark Energy[J]. PHYSICAL REVIEW LETTERS,2012,109(17):171301. |
| APA | Zhao, GB,Crittenden, RG,Pogosian, L,&Zhang, XM；张新民.(2012).Examining the Evidence for Dynamical Dark Energy.PHYSICAL REVIEW LETTERS,109(17),171301. |
| MLA | Zhao, GB,et al."Examining the Evidence for Dynamical Dark Energy".PHYSICAL REVIEW LETTERS 109.17(2012):171301. |
入库方式： OAI收割
来源：高能物理研究所
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