Constraint on the primordial gravitational waves from the joint analysis of BICEP2 and Planck HFI 353 GHz dust polarization data

被引：22

作者：

Cheng, Cheng ^{[1
,2
]}

Huang, Qing-Guo ^{[1
]}

Wang, Sai ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100190, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2014年 / 12期

关键词：

inflation; gravitational waves and CMBR polarization; cosmological parameters from CMBR; PARTICLE PHYSICS MODELS; LARGE-SCALE STRUCTURE; INFLATIONARY UNIVERSE; NATURAL INFLATION; COSMOLOGY; SPECTRUM; FLATNESS; HORIZON; PROBE; CMB;

D O I：

10.1088/1475-7516/2014/12/044

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

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.

引用

页数：11

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