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A note on non-commutative brane inflation
Zhang, Xin; Zhang, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
期号12页码:-
摘要In this paper, we investigate the non-commutative KKLMMT (Kachru-Kallosh-Linde-Maldacena-McAllister-Trivedi) D3/(D) over bar3-brane inflation scenario in detail. Incorporation of the brane inflation scenario and the non-commutative inflation scenario can nicely explain the large negative running of the spectral index as indicated by WMAP three-year data and can significantly release the fine-tuning for the parameter beta. Using the WMAP three-year results (blue-tilted spectral index with large negative running), we explore the parameter space and give the constraints and predictions for the inflationary parameters and cosmological observables in this scenario. We show that this scenario predicts a quite large tensor/scalar ratio and, what is more, a too large cosmic string tension (assuming that the string coupling g(s) is in its likely range from 0.1 to 1) to be compatible with the present observational bound. A more detailed analysis reveals that this model has some inconsistencies according to the fit to WMAP three-year results.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China
关键词Probe Wmap Observations Trans-planckian Physics Spectral Index Cosmological Parameters Power Spectra Universe Maps Flatness Horizon Strings
学科领域Physics
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收录类别SCI
WOS记录号WOS:000243023400019
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被引频次:16[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/311006/5852
专题1978-2010年知识产出
通讯作者Zhang, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Zhang, Xin,Zhang, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. A note on non-commutative brane inflation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2006(12):-.
APA Zhang, Xin,&Zhang, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).A note on non-commutative brane inflation.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(12),-.
MLA Zhang, Xin,et al."A note on non-commutative brane inflation".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .12(2006):-.
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