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Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton
Li, Miao; Lin, Chunshan; Wang, Tower; Wang, Yi; Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China
2009
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号79期号:6页码:-
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.
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
关键词Angular Power Spectrum Inflationary Universe Scenario Dark Energy K-inflation Constraints Anisotropy Horizon Radiation Flatness State
学科领域Physics
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收录类别SCI
WOS记录号WOS:000264762500042
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5364
专题理论物理所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
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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):-.
APA Li, Miao,Lin, Chunshan,Wang, Tower,Wang, Yi,&Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China.(2009).Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton.PHYSICAL REVIEW D,79(6),-.
MLA Li, Miao,et al."Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton".PHYSICAL REVIEW D 79.6(2009):-.
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