Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field
文献类型：期刊论文
| 作者 | Cai, Rong-Gen ; Chen, Chao2,3; Fu, Chengjie
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2021 |
| 卷号 | 104期号:8页码:83537 |
| 关键词 | SPECTRUM LIMITS |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.104.083537 |
| 英文摘要 | We investigate the enhancement of the curvature perturbations in a single-field slow-roll inflation with a spectator scalar field kinetically coupled to the inflaton. The coupling term with a periodic function of inflaton triggers the exponential growth of the spectator field perturbations, which indirectly amplifies the curvature perturbations to produce a sizable abundance of primordial black holes (PBHs). This scenario is found to be insensitive to the inflationary background. We study two distinct populations of the stochastic gravitational wave background (SGWB) produced in this scenario, i.e., induced by the scalar perturbations during the inflationary era and the radiation-dominated era, respectively. With the appropriate choices of parameter space, we consider two PBH mass windows of great interest. One is PBHs of masses O(10-12)M0 that can be a vital component of dark matter, and the predicted total energy spectrum of SGWB shows a unique profile and is detectable by LISA and Taiji. The other is PBHs of masses O(10)M0 which can provide consistent explanation for the LIGO-Virgo events. More interestingly, the predicted gravitational wave signal from the radiation-dominated era may account for the NANOGrav 12.5-yr results. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27651]  |
| 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.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Anhui, Peoples R China 4.Hong Kong Univ Sci & Technol, Jockey Club Inst Adv Study, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Rong-Gen,Chen, Chao,Fu, Chengjie. Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field[J]. PHYSICAL REVIEW D,2021,104(8):83537. |
| APA | Cai, Rong-Gen,Chen, Chao,&Fu, Chengjie.(2021).Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field.PHYSICAL REVIEW D,104(8),83537. |
| MLA | Cai, Rong-Gen,et al."Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field".PHYSICAL REVIEW D 104.8(2021):83537. |
入库方式： OAI收割
来源：理论物理研究所
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