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题名: Constraint on the primordial gravitational waves from the joint analysis of BICEP2 and Planck HFI 353 GHz dust polarization data
作者: Cheng, C ;  Huang, QG ;  Wang, S
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2014
期号: 12, 页码:44
关键词: PARTICLE PHYSICS MODELS ;  LARGE-SCALE STRUCTURE ;  INFLATIONARY UNIVERSE ;  NATURAL INFLATION ;  PERTURBATION ;  ANISOTROPY ;  COSMOLOGY ;  SPECTRUM ;  FLATNESS ;  GRAVITY
学科分类: Physics
DOI: 10.1088/1475-7516/2014/12/044
通讯作者: Cheng, C (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Cheng, Cheng
英文摘要: We make a joint analysis of BICEP2 and recently released Planck HFI 353 GHz dust polarization data, and find that there is no evidence for the primordial gravitational waves and the bound on the tensor-to-scalar ratio becomes r < 0.083 at 95% confidence level in the base Lambda CDM + tensor model. Extending to the model with running of scalar spectral index, the bound is a little bit relaxed to r < 0.116 at 95% confidence level. Our results imply that the inflation model with a single monomial potential is marginally disfavored at around 95% confidence level. Especially, the m(2)phi(2)/2 inflation model is disfavored at more than 2 sigma level. However, the Starobinsky inflation model gives a nice fit.
资助者: NSFC [11322545, 11335012]; project of Knowledge Innovation Program of Chinese Academy of Science
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000350115800013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15552
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,Wang, S. Constraint on the primordial gravitational waves from the joint analysis of BICEP2 and Planck HFI 353 GHz dust polarization data[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(12):44.
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