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Cai, Y; Wang, YT; Piao, YS; Cai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
Preinflationary primordial perturbations
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractThe 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.
2015
Volume92Issue:2Pages:23518
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.92.023518
Indexed BySCI
Funding OrganizationNSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; NSFC [11222546] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804] ; National Basic Research Program of China [2010CB832804]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20927
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCai, Y (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Cai, Y,Wang, YT,Piao, YS,et al. Preinflationary primordial perturbations[J]. PHYSICAL REVIEW D,2015,92(2):23518.
APA Cai, Y,Wang, YT,Piao, YS,&Cai, Y .(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.
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