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Evolution of metric perturbations in a model of nonsingular inflationary cosmology
Cai YF(蔡一夫); Zhang XM(张新民); Cai, YF; Zhang, XM
2009
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
期号6页码:3
通讯作者[Cai, Yi-Fu ; Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
摘要In this paper we study the primordial perturbations generated in an inflation model in which the period of inflation is preceded by a cosmological bounce. After reviewing the background evolution in this model we study the resulting curvature perturbations, entropy fluctuations and non-Gaussianities. Our results show that both the power spectrum of curvature perturbations and the spectra describing the non-Gaussianities obtain oscillatory features. Next, we calculate the tensor perturbations in this model and find a valley in its spectrum. This is a generic feature of inflationary models with a bounce. Further observational signatures and theoretical implications of the model are discussed.
文章类型Review
关键词gravity waves/theory cosmological perturbation theory physics of the early universe
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1088/1475-7516/2009/06/003
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000267776100035
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被引频次:32[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240346
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Cai YF,Zhang XM,Cai, YF,et al. Evolution of metric perturbations in a model of nonsingular inflationary cosmology[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2009(6):3.
APA 蔡一夫,张新民,Cai, YF,&Zhang, XM.(2009).Evolution of metric perturbations in a model of nonsingular inflationary cosmology.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),3.
MLA 蔡一夫,et al."Evolution of metric perturbations in a model of nonsingular inflationary cosmology".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2009):3.
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