dc.contributor.author | DeCross, Matthew P. | |
dc.contributor.author | Kaiser, David I. | |
dc.contributor.author | Prabhu, Anirudh | |
dc.contributor.author | Prescod-Weinstein, Chanda | |
dc.contributor.author | Sfakianakis, Evangelos I. | |
dc.date.accessioned | 2018-03-27T19:52:49Z | |
dc.date.available | 2018-03-27T19:52:49Z | |
dc.date.issued | 2018-01 | |
dc.date.submitted | 2016-11 | |
dc.identifier.issn | 2470-0010 | |
dc.identifier.issn | 2470-0029 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/114423 | |
dc.description.abstract | This is the first of a three-part series of papers, in which we study the preheating phase for multifield models of inflation involving nonminimal couplings. In this paper, we study the single-field attractor behavior that these models exhibit during inflation and quantify its strength and parameter dependence. We further demonstrate that the strong single-field attractor behavior persists after the end of inflation. Preheating in such models therefore generically avoids the “dephasing” that typically affects multifield models with minimally coupled fields, allowing efficient transfer of energy from the oscillating inflaton condensate(s) to coupled perturbations across large portions of parameter space. We develop a doubly covariant formalism for studying the preheating phase in such models and identify several features specific to multifield models with nonminimal couplings, including effects that arise from the nontrivial field-space manifold. In papers II and III, we apply this formalism to study how the amplification of adiabatic and isocurvature perturbations varies with parameters, highlighting several distinct regimes depending on the magnitude of the nonminimal couplings ξ[subscript I]. | en_US |
dc.description.sponsorship | United States. Department of Energy (Contract DE-SC0012567) | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevD.97.023526 | 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 | American Physical Society | en_US |
dc.title | Preheating after multifield inflation with nonminimal couplings. I. Covariant formalism and attractor behavior | en_US |
dc.type | Article | en_US |
dc.identifier.citation | DeCross, Matthew P. et al. "Preheating after multifield inflation with nonminimal couplings. I. Covariant formalism and attractor behavior." Physical Review D 97, 2 (January 2018): 023526 © 2018 American Physical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.mitauthor | DeCross, Matthew P. | |
dc.contributor.mitauthor | Kaiser, David I. | |
dc.contributor.mitauthor | Prabhu, Anirudh | |
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 |
dc.date.updated | 2018-02-07T20:54:49Z | |
dc.language.rfc3066 | en | |
dc.rights.holder | American Physical Society | |
dspace.orderedauthors | DeCross, Matthew P.; Kaiser, David I.; Prabhu, Anirudh; Prescod-Weinstein, Chanda; Sfakianakis, Evangelos I. | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-5054-6744 | |
dspace.mitauthor.error | true | |
mit.license | PUBLISHER_POLICY | en_US |