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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.
2004
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号593期号:593页码:1-9
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Baylor Univ, Dept Phys, Waco, TX 76798 USA
关键词Probe Wmap Observations Spectrum
学科领域Physics
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收录类别SCI
WOS记录号WOS:000222788600001
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被引频次:28[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14041
专题理论物理所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.
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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.
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