Signatures of primordial gravitational waves in matter power spectrum
文献类型：期刊论文
| 作者 | Wang, Ke |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2019-07-11 |
| 卷号 | 79期号:7页码:7 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-019-7111-y |
| 英文摘要 | We simulate the evolution of a dust universe from z=1089 to z=0 by numerically integrating the Einstein's equation for a spatially flat Friedmann-Lemaire-Robertson-Walker (FLRW) background spacetime with scalar perturbations which are derived from the matter power spectrum produced with the Code for Anisotropies in the Microwave Background (CAMB). To investigate the effects of primordial gravitational waves (GWs) on the inhomogeneity of the universe, we add an additional decaying, divergenceless and traceless primordial tensor perturbation with its initial amplitude being 3x10-4 to the above metric. We find that this primordial tensor perturbation suppresses the matter power spectrum by about 0.01% at z=0 for modes with wave number similar to its. This suppression may be a possible probe of a GWs background in the future. |
| WOS关键词 | GRAVITY-WAVES ; NEUTRINOS |
| 资助项目 | National Natural Science Foundation of China[11690024] ; Strategic Priority Program of the Chinese Academy of Sciences[XDB 23040100] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000475730700002 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Strategic Priority Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/27157]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Wang, Ke |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ke. Signatures of primordial gravitational waves in matter power spectrum[J]. EUROPEAN PHYSICAL JOURNAL C,2019,79(7):7. |
| APA | Wang, Ke.(2019).Signatures of primordial gravitational waves in matter power spectrum.EUROPEAN PHYSICAL JOURNAL C,79(7),7. |
| MLA | Wang, Ke."Signatures of primordial gravitational waves in matter power spectrum".EUROPEAN PHYSICAL JOURNAL C 79.7(2019):7. |
入库方式： OAI收割
来源：国家天文台
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