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Dark side of the Universe after Planck data
Cheng, C; Huang, QG; Cheng, C (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2014
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号89期号:4页码:43003
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).
部门归属[Cheng, Cheng; Huang, Qing-Guo] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Cheng, Cheng] Univ Chinese Acad Sci, Beijing 100190, Peoples R China
关键词Baryon Acoustic-oscillations Hubble-space-telescope Digital Sky Survey Constant Constraints Supernovae Distance Sample Matter
学科领域Physics
资助者NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012]
DOI10.1103/PhysRevD.89.043003
URL查看原文
收录类别SCI
语种英语
资助者NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012]
WOS记录号WOS:000332164600001
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被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15478
专题理论物理所SCI论文
通讯作者Cheng, C (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Cheng, C,Huang, QG,Cheng, C . Dark side of the Universe after Planck data[J]. PHYSICAL REVIEW D,2014,89(4):43003.
APA Cheng, C,Huang, QG,&Cheng, C .(2014).Dark side of the Universe after Planck data.PHYSICAL REVIEW D,89(4),43003.
MLA Cheng, C,et al."Dark side of the Universe after Planck data".PHYSICAL REVIEW D 89.4(2014):43003.
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