Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton
文献类型：期刊论文
| 作者 | Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China; Li, Miao ; Lin, Chunshan; Wang, Tower; Wang, Yi
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2009 |
| 卷号 | 79期号:6页码:- |
| 关键词 | Angular Power Spectrum Inflationary Universe Scenario Dark Energy K-inflation Constraints Anisotropy Horizon Radiation Flatness State |
| ISSN号 | 1550-7998 |
| 英文摘要 | We investigate the isocurvaton model, in which the isocurvature perturbation plays a role in suppressing the curvature perturbation, and large non-Gaussianity and gravitational waves can be produced with no isocurvature perturbation for dark matter. We show that in the slow-roll noninteracting multifield theory, the isocurvaton mechanism cannot be realized. This result can also be generalized to most of the studied models with generalized kinetic terms. We also study the implications for the curvaton model. We show that there is a combined constraint for curvaton on non-Gaussianity, gravitational waves, and isocurvature perturbation. The technique used in this paper can also help to simplify some calculations in the mixed inflaton and curvaton models. We also investigate the possibility of producing large negative non-Gaussianity and nonlocal non-Gaussianity in the curvaton model. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000264762500042 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5364]  |
| 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 | Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China,Li, Miao,Lin, Chunshan,et al. Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton[J]. PHYSICAL REVIEW D,2009,79(6):-. |
| APA | Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China,Li, Miao,Lin, Chunshan,Wang, Tower,&Wang, Yi.(2009).Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton.PHYSICAL REVIEW D,79(6),-. |
| MLA | Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China,et al."Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton".PHYSICAL REVIEW D 79.6(2009):-. |
入库方式： OAI收割
来源：理论物理研究所
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