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题名: The tilt of primordial gravitational waves spectra from BICEP2
作者: Cheng, C ;  Huang, QG
刊名: MODERN PHYSICS LETTERS A
出版日期: 2014
卷号: 29, 期号:33, 页码:1450185
关键词: MICROWAVE BACKGROUND ANISOTROPIES ;  INFLATIONARY UNIVERSE ;  HUBBLE CONSTANT ;  FLATNESS ;  HORIZON ;  WMAP
学科分类: Physics
DOI: 10.1142/S0217732314501855
通讯作者: Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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
英文摘要: In this paper we constrain the tilt of the spectrum of primordial gravitational waves from Background Imaging of Cosmic Extragalactic Polarization (BICEP2) data only. We find r = 0.21(-0.10)(+0.04) and n(t) = -0.06(-0.23) (+0.25) (at 68% C.L.) which implies that a scale-invariant primordial gravitational waves spectra is consistent with BICEP2 nicely. Our results provide evidence for supporting inflation model, and the alternative models, for example the ekpyrotic model which predicts n(t) = 2, are ruled out at high significance level.
资助者: Knowledge Innovation Program of Chinese Academy of Science; NSFC [10821504, 11322545, 11335012]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000344748300007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15601
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Cheng, C,Huang, QG. The tilt of primordial gravitational waves spectra from BICEP2[J]. MODERN PHYSICS LETTERS A,2014,29(33):1450185.
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