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题名: Primordial perturbation in Horava-Lifshitz cosmology
作者: Piao, Yun-Song
刊名: PHYSICS LETTERS B
出版日期: 2009
卷号: 681, 期号:1, 页码:1-4
学科分类: Physics
通讯作者: Piao, YS , Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China
部门归属: [Piao, YS] Chinese Acad Sci, Coll Phys Sci, Grad Sch, Beijing 100049, Peoples R China; [Piao, YS] Chinese Acad Sci, ITP, Kavli Inst Theoret Phys China, Beijing 100049, Peoples R China
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.
资助者: NSFC[10775180]; Scientific Research Fund of GUCAS[055101BM03]; CAS[KJCX3-SYW-N2]; National Basic Research Program of China[2010CB832800]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000271411000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5224
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Piao, Yun-Song. Primordial perturbation in Horava-Lifshitz cosmology[J]. PHYSICS LETTERS B,2009,681(1):1-4.
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