No evidence for the blue-tilted power spectrum of relic gravitational waves
文献类型：期刊论文
| 作者 | Huang, QG ; Wang, S
|
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2015 |
| 期号 | 6页码:21 |
| 关键词 | inflation gravitational waves and CMBR polarization |
| 通讯作者 | Huang, QG (reprint author), 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 power spectrum of relic gravitational waves by combining the data from BICEP2/Keck Array and Planck (BKP) and the Laser Interferometer Gravitational-Waves Observatory (LIGO). Supposing the linearly uniform priors for both the tensor-to-scalar ratio r and the tensor tilt n(t), we find n(t) = 0.66(-1.44)(+1.83) at the 68% confidence level from the data of BKP B-modes. By further adding the LIGO upper limit on the intensity of stochastic gravitational-wave background, the constraint becomes n(t) = -0.76(-0.52)(+1.37) at the 68% confidence level by assuming that the tensor amplitude has the similar order of the upper bounds from current CMB experiments. We find that there is no evidence for a blue-tilted power spectrum of relic gravitational waves and either sign of the index of tensor power spectrum is compatible with the current data. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 关键词[WOS] | INFLATIONARY UNIVERSE ; PERTURBATIONS ; COSMOLOGY ; FLATNESS ; HORIZON ; PLANCK ; MODELS ; BICEP2 ; PROBE |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/20977]  |
| 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 | Huang, QG,Wang, S. No evidence for the blue-tilted power spectrum of relic gravitational waves[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015(6):21. |
| APA | Huang, QG,&Wang, S.(2015).No evidence for the blue-tilted power spectrum of relic gravitational waves.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),21. |
| MLA | Huang, QG,et al."No evidence for the blue-tilted power spectrum of relic gravitational waves".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2015):21. |
入库方式： OAI收割
来源：理论物理研究所
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