Negative spectral index of f(NL) in the axion-type curvaton model
文献类型：期刊论文
| 作者 | Huang, Qing-Guo ; Huang, QG , Chinese Acad Sci, KITPC, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
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| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
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| 出版日期 | 2010 |
| 期号 | 11页码:- |
| 关键词 | Non-gaussianity Scalar Field Perturbations Inflation Scenario Fluctuations |
| ISSN号 | 1475-7516 |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000284825100026 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5023]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Huang, QG , Chinese Acad Sci, KITPC, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Qing-Guo,Huang, QG , Chinese Acad Sci, KITPC, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China. Negative spectral index of f(NL) in the axion-type curvaton model[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(11):-. |
| APA | Huang, Qing-Guo,&Huang, QG , Chinese Acad Sci, KITPC, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.(2010).Negative spectral index of f(NL) in the axion-type curvaton model.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(11),-. |
| MLA | Huang, Qing-Guo,et al."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：理论物理研究所
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