Constraint on inflation model from BICEP2 and WMAP 9-year data

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	Constraint on inflation model from BICEP2 and WMAP 9-year data
	Cheng, C; Huang, QG
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS D
	2015
卷号	24 期号:4 页码:1541001
关键词	Inflation gravitational waves
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	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.
学科主题	Astronomy & Astrophysics
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
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21041]
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	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.
APA	Cheng, C,&Huang, QG.(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.