Knowledge Management System of Institute of Theoretical Physics, CAS
Huang, QG ; Huang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
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| Gravitational waves: A probe to the physics in the early universe | |
| Source Publication | INTERNATIONAL JOURNAL OF MODERN PHYSICS A
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| Language | 英语 |
| Keyword | Primordial Gravitational Waves Inflation Tensor-to-scalar Ratio Spectral Index |
| Abstract | 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. |
| 2015 | |
| Volume | 30Issue:28-29Pages:1545005 |
| Subject Area | Physics |
| DOI | http://dx.doi.org/10.1142/S0217751X15450050 |
| Indexed By | SCI |
| Funding Organization | NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] ; NSFC [11322545, 11335012, 11575271] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/20821 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | Huang, QG (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Huang, QG,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,&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,et al."Gravitational waves: A probe to the physics in the early universe".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 30.28-29(2015):1545005. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Gravitational waves-（142KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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