ITP OpenIR  > SCI期刊论文
Li, Miao; Lin, Chunshan; Wang, Tower; Wang, Yi; Li, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China
Non-Gaussianity, isocurvature perturbation, gravitational waves, and a no-go theorem for the isocurvaton
Source PublicationPHYSICAL REVIEW D
KeywordAngular Power Spectrum Inflationary Universe Scenario Dark Energy K-inflation Constraints Anisotropy Horizon Radiation Flatness State
AbstractWe 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.
2009
ISSN1550-7998
Volume79Issue:6Pages:-
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5364
CollectionSCI期刊论文
Corresponding AuthorLi, M , Univ Sci & Technol China, Interdisciplinary Ctr Theoret Studies, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
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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