Inflation in Weyl scaling invariant gravity with R3 extensions
文献类型：期刊论文
| 作者 | Wang, Qing-Yang; Tang, Yong3; Wu, Yue-Liang
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2023 |
| 卷号 | 107期号:8页码:83511 |
| 关键词 | CONFORMAL SYMMETRY UNIVERSE SCENARIO FLUCTUATIONS COSMOLOGY FLATNESS GEOMETRY HORIZON VECTOR SCALAR |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.107.083511 |
| 英文摘要 | The cosmological observations of cosmic microwave background and large-scale structure indicate that our universe has a nearly scaling invariant power spectrum of the primordial perturbation. However, the exact origin for this primordial spectrum is still unclear. Here, we propose the Weyl scaling invariant R2 + R3 gravity that gives rise to inflation that is responsible for the primordial perturbation in the early universe. We develop both analytic and numerical treatments on inflationary observables, and find this model gives a distinctive scalar potential that can support two different patterns of inflation. The first one is similar to that occurs in the pure R2 model, but with a wide range of tensor-to-scalar ratio r from O(10-4) to O(10-2). The other one is a new situation with not only slow-roll inflation but also a short stage of oscillation-induced accelerating expansion. Both patterns of inflation have viable parameter spaces that can be probed by future experiments on cosmic microwave background and primordial gravitational waves. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28004]  |
| 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.Univ Chinese Acad Sci UCAS, Beijing 100049, Peoples R China 2.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 3.Int Ctr Theoret Phys Asia Pacific, Beijing Hangzhou, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qing-Yang,Tang, Yong,Wu, Yue-Liang. Inflation in Weyl scaling invariant gravity with R3 extensions[J]. PHYSICAL REVIEW D,2023,107(8):83511. |
| APA | Wang, Qing-Yang,Tang, Yong,&Wu, Yue-Liang.(2023).Inflation in Weyl scaling invariant gravity with R3 extensions.PHYSICAL REVIEW D,107(8),83511. |
| MLA | Wang, Qing-Yang,et al."Inflation in Weyl scaling invariant gravity with R3 extensions".PHYSICAL REVIEW D 107.8(2023):83511. |
入库方式： OAI收割
来源：理论物理研究所
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