Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed
文献类型：期刊论文
| 作者 | Cai, Yong; Piao, Yun-Song |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2022 |
| 期号 | 6页码:67 |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/JHEP06(2022)067 |
| 英文摘要 | We investigate both the null energy condition (NEC) violating scenario and the c(T)-diminishing scenario for generating enhanced power spectrum of primordial gravitational waves (GWs) during inflation, where c(T) is the propagating speed of primordial GWs. Both of these two scenarios can be realized stably with theories beyond Horndeski, hence can be uniformly implemented within the framework of the effective field theory. We calculate the power spectrum of primordial GWs by assuming that the inflationary Universe undergoes three phases, where the violation of NEC or the diminishment of c(T) occurs in the intermediate phase. A template of the spectrum is given for the NEC-violating scenario. We also discuss the underlying relation and discrepancy between these two scenarios with a disformal transformation. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27762]  |
| 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.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China 3.Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 5.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Yong,Piao, Yun-Song. Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed[J]. JOURNAL OF HIGH ENERGY PHYSICS,2022(6):67. |
| APA | Cai, Yong,&Piao, Yun-Song.(2022).Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed.JOURNAL OF HIGH ENERGY PHYSICS(6),67. |
| MLA | Cai, Yong,et al."Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed".JOURNAL OF HIGH ENERGY PHYSICS .6(2022):67. |
入库方式： OAI收割
来源：理论物理研究所
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