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题名: Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton
作者: Li, Miao ;  Lin, Chunshan ;  Wang, Tower ;  Wang, Yi
刊名: PHYSICAL REVIEW D
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
学科分类: Physics
通讯作者: Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China
部门归属: [Li, M; Lin, CS; Wang, T; Wang, Y] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China; [Li, M; Wang, T; Wang, Y] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000264762500042
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5364
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Li, Miao,Lin, Chunshan,Wang, Tower,et al. Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton[J]. PHYSICAL REVIEW D,2009,79(6):-.
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