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Liu, ZG; Li, H; Piao, YS; Liu, ZG (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
Preinflationary genesis with CMB B-mode polarization
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordUniverse
AbstractRecent B-mode polarization observation seems to imply the tensor tilt n(T) greater than or similar to 1 at large angular scale if the primordial signal is dominated. We show that for a primordial universe, which is in a slowly expanding genesis phase before the slow-roll inflation, the primordial tensor spectrum will get a large-scale cutoff, i.e., n(T) greater than or similar to 1 at large scales while n(T) similar or equal to 0 at small scale. We find that this inflationary scenario not only may be consistent with the observation, but also predicts a large-scale anomaly in BB power spectrum, i.e., due to the large suppression of tensor perturbation amplitude we will hardly see the reionization bump at low-l, which may be falsified by the Planck polarization data.
2014
ISSN1550-7998
Volume90Issue:8Pages:83521
Subject AreaPhysics
DOI10.1103/PhysRevD.90.083521
Indexed BySCI
Funding OrganizationNatural Science Foundation of China (NSFC) [11222546]; National Basic Research Program of China [2010CB832804]; NSFC [11322325, 11033005] ; Natural Science Foundation of China (NSFC) [11222546]; National Basic Research Program of China [2010CB832804]; NSFC [11322325, 11033005] ; Natural Science Foundation of China (NSFC) [11222546]; National Basic Research Program of China [2010CB832804]; NSFC [11322325, 11033005] ; Natural Science Foundation of China (NSFC) [11222546]; National Basic Research Program of China [2010CB832804]; NSFC [11322325, 11033005]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15614
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLiu, ZG (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Liu, ZG,Li, H,Piao, YS,et al. Preinflationary genesis with CMB B-mode polarization[J]. PHYSICAL REVIEW D,2014,90(8):83521.
APA Liu, ZG,Li, H,Piao, YS,&Liu, ZG .(2014).Preinflationary genesis with CMB B-mode polarization.PHYSICAL REVIEW D,90(8),83521.
MLA Liu, ZG,et al."Preinflationary genesis with CMB B-mode polarization".PHYSICAL REVIEW D 90.8(2014):83521.
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