Measuring the Modified Gravitational Wave Propagation beyond General Relativity from CMB Observations
文献类型：期刊论文
| 作者 | Li, Jun2 |
| 刊名 | UNIVERSE
 |
| 出版日期 | 2022 |
| 卷号 | 8期号:7页码:367 |
| 关键词 | INFLATION |
| DOI | 10.3390/universe8070367 |
| 英文摘要 | In modified gravity theories, gravitational wave propagations are presented in nonstandard ways. We consider a friction term different from GR and constrain the modified gravitational waves propagation from observations. The modified gravitational waves produce anisotropies and polarization, which generate measurable tensor power spectra. We explore the impact of the friction term on the power spectrum of B-modes and the impact on the constraints on the other parameters (e.g., r or A(t)) when v(0) is allowed to vary in the Monte Carlo analyses from Planck+BK18 datasets. If we assume the result of the scalar perturbations is unchanged, the inflation consistency relation alters with the friction term. In the Lambda CDM+r+v(0) model, the tensor-to-scalar ratio and the amplitude of the tensor spectrum are obviously influenced. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27794]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Qingdao Univ Sci & Technol, Sch Math & Phys, Qingdao 266061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jun. Measuring the Modified Gravitational Wave Propagation beyond General Relativity from CMB Observations[J]. UNIVERSE,2022,8(7):367. |
| APA | Li, Jun.(2022).Measuring the Modified Gravitational Wave Propagation beyond General Relativity from CMB Observations.UNIVERSE,8(7),367. |
| MLA | Li, Jun."Measuring the Modified Gravitational Wave Propagation beyond General Relativity from CMB Observations".UNIVERSE 8.7(2022):367. |
入库方式： OAI收割
来源：理论物理研究所
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