Knowledge Management System of Institute of Theoretical Physics, CAS
Liu, J; Guo, ZK ; Cai, RG; Shiu, G2
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| Gravitational wave production after inflation with cuspy potentials | |
| Source Publication | PHYSICAL REVIEW D
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| Language | 英语 |
| Abstract | We investigate the effect of the cuspiness of scalar potentials on the production of gravitational waves during oscillon formation after inflation. We consider a more general form of potentials with a mass parameter M, which reproduce cuspy potentials for fields much larger than M and smooth potentials in the opposite limit. For cuspy potentials, nonsmooth oscillations of the inflaton induce an amplification of the inflaton fluctuations at the bottom of the potential, so that oscillons copiously form, which leads to a significant stochastic gravitational wave background with a double-peak spectrum. By varying the parameter M, we find that cuspy potentials yield stronger signals of gravitational waves and the generation of gravitational waves disappears for smooth potentials. Moreover, we calculate the equation of state after inflation and find the presence of a quasimatter-dominated stage right before the transition to the radiation-dominated stage. |
| 2019 | |
| ISSN | 2470-0010 |
| Volume | 99Issue:10Pages:103506 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| MOST Discipline Catalogue | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1103/PhysRevD.99.103506 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/23440 |
| Collection | SCI期刊论文 |
| Affiliation | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA |
| Recommended Citation GB/T 7714 | Liu, J,Guo, ZK,Cai, RG,et al. Gravitational wave production after inflation with cuspy potentials[J]. PHYSICAL REVIEW D,2019,99(10):103506. |
| APA | Liu, J,Guo, ZK,Cai, RG,&Shiu, G.(2019).Gravitational wave production after inflation with cuspy potentials.PHYSICAL REVIEW D,99(10),103506. |
| MLA | Liu, J,et al."Gravitational wave production after inflation with cuspy potentials".PHYSICAL REVIEW D 99.10(2019):103506. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Gravitational wave p（5248KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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