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Chen, Xingang; Wang, Yi; Chen, XG , MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
Large non-Gaussianities with intermediate shapes from quasi-single-field inflation
Source PublicationPHYSICAL REVIEW D
KeywordPerturbations Flatness Universe Horizon
AbstractWe study the slow-roll inflation models, where the inflaton slow-rolls along a trajectory whose orthogonal directions are lifted by potentials with masses of order the Hubble parameter. In these models large non-Gaussianities can be generated through the transformation from the isocurvature modes to the curvature mode, once the inflaton trajectory turns. We find large bispectra with a one-parameter family of novel shapes, interpolating between the equilateral and local shape. According to the in-in formalism, the shapes of these non-Gaussianities are different from a simple projection from the isocurvature non-Gaussian correlation functions.
2010
ISSN1550-7998
Volume81Issue:6Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationUS DOE[DEFG02-05ER41360]; NSFC; NSERC; IPP ; US DOE[DEFG02-05ER41360]; NSFC; NSERC; IPP ; US DOE[DEFG02-05ER41360]; NSFC; NSERC; IPP ; US DOE[DEFG02-05ER41360]; NSFC; NSERC; IPP
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5147
Collection理论物理所科研产出_SCI论文
Corresponding AuthorChen, XG , MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
Recommended Citation
GB/T 7714
Chen, Xingang,Wang, Yi,Chen, XG , MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA. Large non-Gaussianities with intermediate shapes from quasi-single-field inflation[J]. PHYSICAL REVIEW D,2010,81(6):-.
APA Chen, Xingang,Wang, Yi,&Chen, XG , MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA.(2010).Large non-Gaussianities with intermediate shapes from quasi-single-field inflation.PHYSICAL REVIEW D,81(6),-.
MLA Chen, Xingang,et al."Large non-Gaussianities with intermediate shapes from quasi-single-field inflation".PHYSICAL REVIEW D 81.6(2010):-.
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