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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
Source PublicationPHYSICS LETTERS B
KeywordProbe Wmap Observations Spectrum
AbstractAn 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.
2004
ISSN0370-2693
Volume593Issue:593Pages:1-9
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14041
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCai, RG , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China, Peoples R China.
Recommended Citation
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.
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