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题名: Constraint on inflation model from BICEP2 and WMAP 9-year data
作者: Cheng, C;  Huang, QG
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
出版日期: 2015
卷号: 24, 期号:4, 页码:1541001
关键词: Inflation ;  gravitational waves
学科分类: Astronomy & Astrophysics
DOI: http://dx.doi.org/10.1142/S0218271815410011
通讯作者: Cheng, C (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: 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.
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: UNIVERSE SCENARIO ;  HUBBLE CONSTANT ;  PERTURBATIONS ;  FLUCTUATIONS ;  COSMOLOGY ;  FLATNESS ;  CREATION ;  HORIZON ;  SCALE ;  FIELD
收录类别: SCI
项目资助者: Chinese Academy of Science ;  NSFC [10821504, 11322545, 11335012]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21041
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Cheng, C,Huang, QG. Constraint on inflation model from BICEP2 and WMAP 9-year data[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2015,24(4):1541001.
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