dc.contributor.author | Chen, Xingang | |
dc.contributor.author | Wang, Yi | |
dc.date.accessioned | 2010-09-21T15:21:06Z | |
dc.date.available | 2010-09-21T15:21:06Z | |
dc.date.issued | 2010-03 | |
dc.date.submitted | 2010-10 | |
dc.identifier.issn | 1550-7998 | |
dc.identifier.issn | 1550-2368 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/58620 | |
dc.description.abstract | We 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. | en_US |
dc.description.sponsorship | United States. Dept. of Energy (DEFG02- 05ER41360) | en_US |
dc.description.sponsorship | National Natural Science Foundation (China) | en_US |
dc.description.sponsorship | Natural Sciences and Engineering Research Council of Canada | en_US |
dc.description.sponsorship | IIP | en_US |
dc.language.iso | en_US | |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevD.81.063511 | en_US |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
dc.source | APS | en_US |
dc.title | Large non-Gaussianities with intermediate shapes from quasi-single-field inflation | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Chen, Xingang, and Yi Wang. "Large non-Gaussianities with intermediate shapes from quasi-single-field inflation." Physical Review D 81.6 (2010): 063511. © 2010 The American Physical Society. | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Center for Theoretical Physics | en_US |
dc.contributor.approver | Chen, Xingang | |
dc.contributor.mitauthor | Chen, Xingang | |
dc.relation.journal | Physical Review D | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Chen, Xingang; Wang, Yi | en |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |