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	Primordial perturbation spectra from various expanding and contracting phases before the "bounce"
	Piao, YS; Zhang, YZ
刊名	Physical review d
	2004-08-01
卷号	70期号:4页码:5
ISSN号	1550-7998
DOI	10.1103/physrevd.70.043516
通讯作者	Piao, ys(yspiao@itp.ac.cn)
英文摘要	In this paper we describe the evolution of various expanding and contracting phases before the "bounce" in einstein frame. focusing on the case of a single scalar field, in terms of the parameter w of the state equation, four different regions denoting different expanding and contracting phases are pointed out. we discuss possible scenarios generating the nearly scale-invariant spectrum and show that the inflation and other alternative scenarios recently proposed can be placed in different positions of these regions. our work offers an interesting classification for the primordial perturbation spectra from various phases before the "bounce," which may have important implications for building an early universe scenario embedded in possible high-energy theories.
WOS关键词	PROBE WMAP OBSERVATIONS ; COSMOLOGICAL PERTURBATIONS ; INFLATIONARY UNIVERSE ; FLATNESS ; HORIZON
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000223859700037
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176394
专题	高能物理研究所
通讯作者	Piao, YS
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China 3.CCAST, World Lab, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Piao, YS,Zhang, YZ. Primordial perturbation spectra from various expanding and contracting phases before the "bounce"[J]. Physical review d,2004,70(4):5.
APA	Piao, YS,&Zhang, YZ.(2004).Primordial perturbation spectra from various expanding and contracting phases before the "bounce".Physical review d,70(4),5.
MLA	Piao, YS,et al."Primordial perturbation spectra from various expanding and contracting phases before the "bounce"".Physical review d 70.4(2004):5.

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