Dark side of the Universe after Planck data

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	Dark side of the Universe after Planck data
	Huang, QG
刊名	PHYSICAL REVIEW D
	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
内容类型	期刊论文
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.