Preinflationary primordial perturbations

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	Preinflationary primordial perturbations
	Cai, Y; Wang, YT; Piao, YS
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:2 页码:23518
通讯作者	Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
英文摘要	The large-scale power deficit in the cosmic microwave background fluctuations might be relevant with the physics of preinflation, a bounce, or a superinflationary phase preceding slow-roll inflation, which can provide a singular-free realization of inflation. We investigate the primordial perturbations from such preinflationary evolutions, which generally may consist of multiple phases with different background dynamics, and give a universal formula for the power spectrum of primordial perturbations in terms of the recursive Bogoliubov coefficients. We also apply our formula to corresponding cases and show how the intensity of large-scale power suppression is affected by the preinflationary physics.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	INFLATIONARY UNIVERSE ; COSMOLOGY ; FLATNESS ; HORIZON ; BOUNCE
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20927]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Cai, Y,Wang, YT,Piao, YS. Preinflationary primordial perturbations[J]. PHYSICAL REVIEW D,2015,92(2):23518.
APA	Cai, Y,Wang, YT,&Piao, YS.(2015).Preinflationary primordial perturbations.PHYSICAL REVIEW D,92(2),23518.
MLA	Cai, Y,et al."Preinflationary primordial perturbations".PHYSICAL REVIEW D 92.2(2015):23518.