Dark side of the Universe after Planck data
文献类型：期刊论文
| 作者 | Huang, QG
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:4页码:43003 |
| 关键词 | BARYON ACOUSTIC-OSCILLATIONS HUBBLE-SPACE-TELESCOPE DIGITAL SKY SURVEY CONSTANT CONSTRAINTS SUPERNOVAE DISTANCE SAMPLE MATTER |
| ISSN号 | 1550-7998 |
| 通讯作者 | Cheng, C (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | Recently released Planck data imply a smaller Hubble constant H-0 than that from the Hubble Space Telescope project (HST) and a larger percentage of the matter components Omega(m) compared to the Supernova Legacy Survey (SNLS) in the. cold dark matter (CDM) model. In this paper we found that even though the tension on H-0 between Planck and HST can be relaxed if the dark radiation is introduced [Delta N-eff 0.536(-0.224)(-0.229) at 68% CL from the data sets of Planck + WMAP polarization (WP) + baryon acoustic oscillation (BAO) + the combination of supernova Union2.1 compilation of 580 Supernovae (Union2.1) + HST], Omega(m) from Planck is still not nicely compatible with that from SNLS. The tensions between Planck and other astrophysical data sets can be significantly relaxed in the wCDM model, and the combination of these data sets prefers a phantomlike dark energy at more than 95% CL: w -1.15 +/- 0.07 and w -1.16 +/- 0.06 at 68% CL from Planck + WP + BAO + Union2.1 + HST and Planck + WP + BAO + SNLS + HST, respectively. From the statistical point of view, there is no evidence for a time-evolving equation of state (Delta chi(2) -0.3 compared to a constant equation of state for the combination of Planck + WP + BAO + SNLS + HST). |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | NSFC [10821504, 11322545, 11335012] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevD.89.043003 |
| 语种 | 英语 |
| WOS记录号 | WOS:000332164600001 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15478]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Huang, QG. Dark side of the Universe after Planck data[J]. PHYSICAL REVIEW D,2014,89(4):43003. |
| APA | Huang, QG.(2014).Dark side of the Universe after Planck data.PHYSICAL REVIEW D,89(4),43003. |
| MLA | Huang, QG."Dark side of the Universe after Planck data".PHYSICAL REVIEW D 89.4(2014):43003. |
入库方式： OAI收割
来源：理论物理研究所
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