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dc.contributor.author | Avdeev N. | |
dc.contributor.author | Toporensky A. | |
dc.date.accessioned | 2022-02-09T20:33:16Z | |
dc.date.available | 2022-02-09T20:33:16Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0202-2893 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/168967 | |
dc.description.abstract | Abstract: We consider the initial conditions for inflation in the nonminimal kinetic coupling theory. If inflation is driven solely by the kinetic term with no potential, the resulting number of e-folds depends only on the initial velocity of the scalar field, φ. We write down the expression for the number of e-folds explicitly, and show that for physically reasonable values of the coupling constant, we can get 60 e-folds only for an exponentially big initial φ. When the scalar field potential is taken into account, a double inflation scenario arises, where the first inflation is kinetic term driven, while the second one is potential term driven. In this case, we need not a very large φ to start with for 60 e-folds, on the other hand, some initial conditions lead to a physically inadmissible eternal inflation. We show numerically that in the measure used in the present paper only a smaller part of initial conditions leads to eternal inflation for reasonable values of the coupling constant. | |
dc.relation.ispartofseries | Gravitation and Cosmology | |
dc.title | On Viability of Inflation in Nonminimal Kinetic Coupling Theory | |
dc.type | Article | |
dc.relation.ispartofseries-issue | 3 | |
dc.relation.ispartofseries-volume | 27 | |
dc.collection | Публикации сотрудников КФУ | |
dc.relation.startpage | 269 | |
dc.source.id | SCOPUS02022893-2021-27-3-SID85114997866 |