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题名: Preinflationary primordial perturbations
作者: Cai, Y;  Wang, YT;  Piao, YS
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 92, 期号:2, 页码:23518
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.92.023518
通讯作者: Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
文章类型: Article
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.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: INFLATIONARY UNIVERSE ;  COSMOLOGY ;  FLATNESS ;  HORIZON ;  BOUNCE
收录类别: SCI
项目资助者: NSFC [11222546] ;  National Basic Research Program of China [2010CB832804]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20927
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Recommended Citation:
Cai, Y,Wang, YT,Piao, YS. Preinflationary primordial perturbations[J]. PHYSICAL REVIEW D,2015,92(2):23518.
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