A note on curvature fluctuation of noncommutative inflation

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	A note on curvature fluctuation of noncommutative inflation
	Cai, RG; Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China.
刊名	PHYSICS LETTERS B
	2004
卷号	593 期号:593 页码:1-9
关键词	Probe Wmap Observations Spectrum
ISSN号	0370-2693
英文摘要	An elegant approach, which incorporates the effect of the stringy spacetime uncertainty relation, to calculate power spectra of fluctuations during inflation has been suggested by Brandenberger and Ho. In this approach, one of important features is the appearance of an upper bound on the comoving momentum k, at which the stringy spacetime uncertainty relation is saturated. As a result, the time-dependent upper bound leads us to choose naturally a set of initial vacua, in which the stringy uncertainty relation is saturated. In this Letter, with that set of vacua we calculate power spectrum of curvature fluctuation for a power law inflation, up to the leading order of a parameter describing the spacetime noncommutativity. It turns out that this choice of initial vacuum has a significant effect on the power spectrum of fluctuations. (C) 2004 Elsevier B.V. All rights reserved.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000222788600001
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14041]
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	Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China.
推荐引用方式 GB/T 7714	Cai, RG,Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China.. A note on curvature fluctuation of noncommutative inflation[J]. PHYSICS LETTERS B,2004,593(593):1-9.
APA	Cai, RG,&Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China..(2004).A note on curvature fluctuation of noncommutative inflation.PHYSICS LETTERS B,593(593),1-9.
MLA	Cai, RG,et al."A note on curvature fluctuation of noncommutative inflation".PHYSICS LETTERS B 593.593(2004):1-9.