The Effective Field Theory of nonsingular cosmology

doi:http://dx.doi.org/10.1007/JHEP01(2017)090

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	The Effective Field Theory of nonsingular cosmology
	Cai, Y; Wan, YP; Li, HG; Qiu, TT; Piao, YS; Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2017
期号	1
关键词	Spacetime Singularities Classical Theories Of Gravity CoSmology Of Theories Beyond The Sm
DOI	http://dx.doi.org/10.1007/JHEP01(2017)090
英文摘要	In this paper, we explore the nonsingular cosmology within the framework of the E ff ective Field Theory (EFT) of cosmological perturbations. Due to the recently proved no-go theorem, any nonsingular cosmological models based on the cubic Galileon su ff er from pathologies. We show how the EFT could help us clarify the origin of the no-go theorem, and o ff er us solutions to break the no-go. Particularly, we point out that the gradient instability can be removed by using some spatial derivative operators in EFT. Based on the EFT description, we obtain a realistic healthy nonsingular cosmological model, and show the perturbation spectrum can be consistent with the observations.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22147]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Cai, Y,Wan, YP,Li, HG,et al. The Effective Field Theory of nonsingular cosmology[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(1).
APA	Cai, Y,Wan, YP,Li, HG,Qiu, TT,Piao, YS,&Cai, Y .(2017).The Effective Field Theory of nonsingular cosmology.JOURNAL OF HIGH ENERGY PHYSICS(1).
MLA	Cai, Y,et al."The Effective Field Theory of nonsingular cosmology".JOURNAL OF HIGH ENERGY PHYSICS .1(2017).