ITP OpenIR  > 理论物理所2015年知识产出
Constraint on inflation model from BICEP2 and WMAP 9-year 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.
2015
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS D
卷号24期号:4页码:1541001
文章类型Article
摘要Even though Planck data released in 2013 (P13) is not compatible with Background Imaging of Cosmic Extragalactic Polarization (B2) and some local cosmological observations, including Supernova Legacy Survey (SNLS) samples and H-0 prior from Hubble Space Telescope (HST) etc. Wilkinson Microwave Anisotropy Probe 9-year data (W9) is consistent with all of them in the base six-parameter Lambda CDM+ tensor cosmology quite well. In this paper, we adopt the combinations of B2+W9 and B2+W9+SNLS+BAO+HST to constrain the cosmological parameters in the base sixparameter Lambda CDM+ tensor model with n(t) = -r/8, where r and nt are the tensor-to-scalar ratio and the tilt of relic gravitational wave spectrum, and BAO denotes Baryon Acoustic Oscillation (BAO). We find that the Harrison-Zel'dovich (HZ) scale invariant scalar power spectrum is consistent with both data combinations, chaotic inflation is marginally disfavored by the data at around 2 sigma level, but the power-law inflation model and the inflation model with inverse power-law potential can fit the data nicely.
关键词Inflation Gravitational Waves
学科领域Astronomy & Astrophysics
资助者Chinese Academy of Science ; Chinese Academy of Science ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; Chinese Academy of Science ; Chinese Academy of Science ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012]
DOIhttp://dx.doi.org/10.1142/S0218271815410011
关键词[WOS]UNIVERSE SCENARIO ; HUBBLE CONSTANT ; PERTURBATIONS ; FLUCTUATIONS ; COSMOLOGY ; FLATNESS ; CREATION ; HORIZON ; SCALE ; FIELD
收录类别SCI
语种英语
资助者Chinese Academy of Science ; Chinese Academy of Science ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012] ; Chinese Academy of Science ; Chinese Academy of Science ; NSFC [10821504, 11322545, 11335012] ; NSFC [10821504, 11322545, 11335012]
WOS类目Astronomy & Astrophysics
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21041
专题理论物理所2015年知识产出
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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Cheng, C,Huang, QG,Cheng, C . Constraint on inflation model from BICEP2 and WMAP 9-year data[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2015,24(4):1541001.
APA Cheng, C,Huang, QG,&Cheng, C .(2015).Constraint on inflation model from BICEP2 and WMAP 9-year data.INTERNATIONAL JOURNAL OF MODERN PHYSICS D,24(4),1541001.
MLA Cheng, C,et al."Constraint on inflation model from BICEP2 and WMAP 9-year data".INTERNATIONAL JOURNAL OF MODERN PHYSICS D 24.4(2015):1541001.
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