Gravitational waves: A probe to the physics in the early universe
文献类型：期刊论文
| 作者 | Huang, QG
|
| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS A
 |
| 出版日期 | 2015 |
| 卷号 | 30期号:28-29页码:1545005 |
| 关键词 | Primordial gravitational waves inflation tensor-to-scalar ratio spectral index |
| 通讯作者 | Huang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | Gravitational waves can escape from the big bang and can be taken as a probe to the physics, in particular the inflation, in the early universe. Planck scale is a fundamental scale for quantum theory of gravity. Requiring the excursion distance of inflaton in the field space during inflation yields an upper bound on the tensor-to-scalar ratio. For example, r < 7 x 10(-4) for n(s) = 0.9645. In the typical inflationary scenario, we predict 1 -2/N < n(s) < 1 and -2/N-2 < alpha(s) < 0 which are consistent with Planck data released in 2015 quite well. Subtracting the contribution of thermal dust measured by Planck, BICEP2 data implies r less than or similar to 0.08 which is the tightest bound on the tensor-to-scalar ratio from current experiments. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 关键词[WOS] | INFLATIONARY UNIVERSE ; BICEP2 DATA ; SPECTRUM ; FLATNESS ; HORIZON ; PLANCK ; MODELS ; LEARN |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/20821]  |
| 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. Gravitational waves: A probe to the physics in the early universe[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2015,30(28-29):1545005. |
| APA | Huang, QG.(2015).Gravitational waves: A probe to the physics in the early universe.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,30(28-29),1545005. |
| MLA | Huang, QG."Gravitational waves: A probe to the physics in the early universe".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 30.28-29(2015):1545005. |
入库方式： OAI收割
来源：理论物理研究所
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