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Cai, Y; Piao, YS
Higher order derivative coupling to gravity and its cosmological implications
发表期刊PHYSICAL REVIEW D
语种英语
关键词FIELD-EQUATIONS INFLATION UNIVERSE BOUNCE MODEL
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.
2017
ISSN2470-0010
卷号96期号:12页码:124028
学科领域Astronomy & Astrophysics ; Physics
学科门类Astronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.96.124028
收录类别SCIE
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22993
专题理论物理所科研产出_SCI论文
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
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Cai, Y,Piao, YS. Higher order derivative coupling to gravity and its cosmological implications[J]. PHYSICAL REVIEW D,2017,96(12):124028.
APA Cai, Y,&Piao, YS.(2017).Higher order derivative coupling to gravity and its cosmological implications.PHYSICAL REVIEW D,96(12),124028.
MLA Cai, Y,et al."Higher order derivative coupling to gravity and its cosmological implications".PHYSICAL REVIEW D 96.12(2017):124028.
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