Higher order derivative coupling to gravity and its cosmological implications
文献类型：期刊论文
| 作者 | Piao, YS; Cai, Y |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2017 |
| 卷号 | 96期号:12页码:124028 |
| 关键词 | FIELD-EQUATIONS INFLATION UNIVERSE BOUNCE MODEL |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.96.124028 |
| 英文摘要 | We show that the R-(3)delta K operator in effective field theory is significant for avoiding the instability of nonsingular bounce, where R-(3) and K-mu nu are the three-dimensional Ricci scalar and the extrinsic curvature on the spacelike hypersurface, respectively. We point out that the covariant Lagrangian of R-(3)delta K, i.e., L-R(3)delta K, has the second order derivative couplings of scalar field to gravity which do not appear in Horndeski theory or its extensions but does not bring the Ostrogradski ghost. We also discuss the possible effect of L-R(3)delta K on the primordial scalar perturbation in the inflation scenario. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23010]  |
| 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.[Cai, Yong 2.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Piao, YS,Cai, Y. Higher order derivative coupling to gravity and its cosmological implications[J]. PHYSICAL REVIEW D,2017,96(12):124028. |
| APA | Piao, YS,&Cai, Y.(2017).Higher order derivative coupling to gravity and its cosmological implications.PHYSICAL REVIEW D,96(12),124028. |
| MLA | Piao, YS,et al."Higher order derivative coupling to gravity and its cosmological implications".PHYSICAL REVIEW D 96.12(2017):124028. |
入库方式： OAI收割
来源：理论物理研究所
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