Rotating a curvaton brane in a warped throat
Zhang, J; Cai YF(蔡一夫); Cai, YF; Piao, YS
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2010
期号5页码:1
关键词string theory and cosmology cosmological perturbation theory
学科分类Astronomy & Astrophysics; Physics
DOI10.1088/1475-7516/2010/05/001
通讯作者[Zhang, Jun ; Piao, Yun-Song] Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing 100049, Peoples R China ; [Cai, Yi-Fu] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
英文摘要In this paper we study a curvaton model obtained by considering a probe anti-D3-brane with angular motion at the bottom of a KS throat with approximate isometries. We calculate the spectrum of curvature perturbations and the non-Gaussianities of this model. Specifically, we consider the limit of relativistic rotation of the curvaton brane which leads to a small sound speed, and thus it can be viewed as an implementation of the DBI-curvaton mechanism. We find that the primordial power spectrum is nearly scale-invariant while the non-Gaussianity of local type is sizable and that of equilateral type is usually large and negative. Moreover, we study both the theoretical and observational constraints on this model, and find that there exists a sizable allowed region for the phase space of this model.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000279490800039
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240340
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Zhang, J,Cai YF,Cai, YF,et al. Rotating a curvaton brane in a warped throat[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(5):1.
APA Zhang, J,蔡一夫,Cai, YF,&Piao, YS.(2010).Rotating a curvaton brane in a warped throat.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),1.
MLA Zhang, J,et al."Rotating a curvaton brane in a warped throat".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2010):1.
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