Show simple item record

dc.contributor.authorDienes, Keith R.
dc.contributor.authorKost, Jeff
dc.contributor.authorThomas, Brooks
dc.date.accessioned2019-11-07T02:43:36Z
dc.date.available2019-11-07T02:43:36Z
dc.date.issued2019-10-11
dc.identifier.citationDienes, K. R., Kost, J., & Thomas, B. (2019). Enlarging the space of viable inflation models: A slingshot mechanism. Physical Review D, 100(8), 083516.en_US
dc.identifier.issn2470-0010
dc.identifier.doi10.1103/physrevd.100.083516
dc.identifier.urihttp://hdl.handle.net/10150/634988
dc.description.abstractThe viability of a given model for inflation is determined not only by the form of the inflaton potential, but also by the initial inflaton field configuration. In many models, field configurations which are otherwise well-motivated nevertheless fail to induce inflation, or fail to produce an inflationary epoch of duration sufficient to solve the horizon and flatness problems. In this paper, we propose a mechanism which enables inflation to occur even with such initial conditions. Our mechanism involves multiple scalar fields which experience a time-dependent mixing. This in turn leads to a “re-overdamping” phase as well as a parametric resonance which together “slingshot” the inflaton field from regions of parameter space that do not induce inflation to regions that do. Our mechanism is flexible, dynamical, and capable of yielding an inflationary epoch of sufficiently long duration. This slingshot mechanism can therefore be utilized in a variety of settings and thereby enlarge the space of potentially viable inflation models.en_US
dc.description.sponsorshipU.S. Department of EnergyUnited States Department of Energy (DOE) [DE-FG02-13ER41976 (DE-SC0009913)]; U.S. National Science Foundation through its employee IR/D program; Institute for Basic Science in Korea [IBS-R018-D1]; National Science FoundationNational Science Foundation (NSF) [PHY-1607611, PHY-1720430]en_US
dc.language.isoenen_US
dc.publisherAMER PHYSICAL SOCen_US
dc.rightsCopyright © The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleEnlarging the space of viable inflation models: A slingshot mechanismen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Physen_US
dc.identifier.journalPHYSICAL REVIEW Den_US
dc.description.noteOpen access article
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume100
dc.source.issue8
refterms.dateFOA2019-11-07T02:43:37Z


Files in this item

Thumbnail
Name:
PhysRevD.100.083516.pdf
Size:
1.687Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

Copyright © The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.
Except where otherwise noted, this item's license is described as Copyright © The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.