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. |
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