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Quasi-single field inflation and non-Gaussianities
文献类型：期刊论文
| 作者 | Chen, Xingang; Wang, Yi; Chen, XG , Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2010 |
| 期号 | 4页码:- |
| 关键词 | Expectation Value Formalism Parameter f(Nl) K-inflation Perturbations Scenario Flatness Universe Curvaton Horizon |
| ISSN号 | 1475-7516 |
| 英文摘要 | In quasi-single field inflation models, massive isocurvature modes, that are coupled to the inflaton and have mass of order the Hubble parameter, can have nontrivial impacts on density perturbations, especially non-Gaussianities. We study a simple example of quasi-single field inflation in terms of turning inflaton trajectory. Large bispectra with a one-parameter family of novel shapes arise, lying between the well-known local and equilateral shape. The trispectra can also be very large and its magnitude t(NL) can be much larger than f(NL)(2). |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000277684600006 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5138]  |
| 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 | Chen, XG , Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England |
| 推荐引用方式 GB/T 7714 | Chen, Xingang,Wang, Yi,Chen, XG , Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England. Quasi-single field inflation and non-Gaussianities[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2010(4):-. |
| APA | Chen, Xingang,Wang, Yi,&Chen, XG , Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Theoret Cosmol, Wilberforce Rd, Cambridge CB3 0WA, England.(2010).Quasi-single field inflation and non-Gaussianities.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),-. |
| MLA | Chen, Xingang,et al."Quasi-single field inflation and non-Gaussianities".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2010):-. |
入库方式： OAI收割
来源：理论物理研究所
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