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题名: A note on curvature fluctuation of noncommutative inflation
作者: 蔡荣根
刊名: PHYSICS LETTERS B
出版日期: 2004
卷号: 593, 期号:593, 页码:1-9
关键词: PROBE WMAP OBSERVATIONS ;  SPECTRUM
学科分类: Physics
通讯作者: Cai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Baylor Univ, Dept Phys, Waco, TX 76798 USA
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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000222788600001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14041
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Cai, RG. A note on curvature fluctuation of noncommutative inflation[J]. PHYSICS LETTERS B,2004,593(593):1-9.
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