中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Negative spectral index of f(NL) in the axion-type curvaton model

文献类型:期刊论文

作者Huang, QG
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期2010
期号11
关键词NON-GAUSSIANITY SCALAR FIELD PERTURBATIONS INFLATION SCENARIO FLUCTUATIONS
ISSN号1475-7516
通讯作者Huang, QG (reprint author), Chinese Acad Sci, KITPC, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
中文摘要We derive the spectral index of f(NL) and its running from isocurvature single field and investigate the curvaton models with a negative spectral index of f(NL) in detail. In particular, a numerical study of the axion-type curvaton model is illustrated, and we find that the spectral index of f(NL) is negative and its absolute value is maximized around sigma(*) = pi f/2 for the potential V (sigma) = m(2)f(2)(1 - cos sigma/f). The spectral index of f(NL) can be O(-0.1) for the axion-type curvaton model. A convincing detection of a positive n(fNL) will rule out the axion-type curvaton model. In addition, we also give a general discussion about the detectable parameter space for the curvaton model with a polynomial potential.
收录类别SCI
资助信息Chinese Academy of Science; NSFC
语种英语
公开日期2013-09-24
源URL[http://ir.iphy.ac.cn/handle/311004/49796]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Huang, QG. Negative spectral index of f(NL) in the axion-type curvaton model[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(11).
APA Huang, QG.(2010).Negative spectral index of f(NL) in the axion-type curvaton model.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(11).
MLA Huang, QG."Negative spectral index of f(NL) in the axion-type curvaton model".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .11(2010).

入库方式: OAI收割

来源:物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。