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dc.contributor.author | Tretyakov P. | |
dc.date.accessioned | 2018-09-19T21:16:28Z | |
dc.date.available | 2018-09-19T21:16:28Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 1434-6044 | |
dc.identifier.uri | https://dspace.kpfu.ru/xmlui/handle/net/143707 | |
dc.description.abstract | © 2016, The Author(s).We discuss possible instabilities in higher-derivative matter field theories. These theories have two free parameters β1 and β4. By using a dynamical system approach we explicitly demonstrate that for the stability of Minkowski space in an expanding universe we need the condition β4< 0. By using the quantum field theory approach we also find an additional restriction for the parameters, β1>-13β4, which is needed to avoid a tachyon-like instability. | |
dc.relation.ispartofseries | European Physical Journal C | |
dc.title | Stability in higher-derivative matter fields theories | |
dc.type | Letter | |
dc.relation.ispartofseries-issue | 9 | |
dc.relation.ispartofseries-volume | 76 | |
dc.collection | Публикации сотрудников КФУ | |
dc.source.id | SCOPUS14346044-2016-76-9-SID84988027322 |