Primordial perturbation in Horava-Lifshitz cosmology

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	Primordial perturbation in Horava-Lifshitz cosmology
	Piao, Yun-Song; Piao, YS , Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China
刊名	PHYSICS LETTERS B
	2009
卷号	681 期号:1 页码:1-4
ISSN号	0370-2693
英文摘要	Recently, Horava has proposed a renormalizable theory of gravity with critical exponent z = 3 in the UV. This proposal might imply that the scale invariant primordial perturbation can be generated in any expansion of early universe with a similar to t(n) and n > 1/3, which, in this Letter, will be confirmed by solving the motion equation of perturbation mode on super sound horizon scale for any background evolution of early universe. It is found that if enough efolding number of primordial perturbation suitable for observable universe is required, then n I needs to be satisfied, unless the scale of UV regime is quite low. However, the possible UV completeness of HL gravity helps to relax this bound. (C) 2009 Elsevier ON. All rights reserved.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000271411000001
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5224]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Piao, YS , Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Piao, Yun-Song,Piao, YS , Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China. Primordial perturbation in Horava-Lifshitz cosmology[J]. PHYSICS LETTERS B,2009,681(1):1-4.
APA	Piao, Yun-Song,&Piao, YS , Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China.(2009).Primordial perturbation in Horava-Lifshitz cosmology.PHYSICS LETTERS B,681(1),1-4.
MLA	Piao, Yun-Song,et al."Primordial perturbation in Horava-Lifshitz cosmology".PHYSICS LETTERS B 681.1(2009):1-4.