Horndeski Genesis: strong coupling and absence thereof

Horndeski Genesis: strong coupling and absence thereof

We consider Genesis in Horndeski theory as alternative to or completion of inflationary scenario. One of the options free of instabilities at all comological epochs is putative strong coupling regime at the early Genesis stage. We address this issue to see whether classical field theory description...

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Main Authors: Ageeva Yulia, Evseev Oleg, Melichev Oleg, Rubakov Valery
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201819107010
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spelling doaj-b4f91c9a07b34779ac9fd1bf98b17c802021-08-02T14:20:55ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011910701010.1051/epjconf/201819107010epjconf_quarks2018_07010Horndeski Genesis: strong coupling and absence thereofAgeeva YuliaEvseev OlegMelichev OlegRubakov ValeryWe consider Genesis in Horndeski theory as alternative to or completion of inflationary scenario. One of the options free of instabilities at all comological epochs is putative strong coupling regime at the early Genesis stage. We address this issue to see whether classical field theory description of the background evolution at this early stage is consistent, nevertheless. We argue that, indeed, despite naive strong coupling, classical analysis is legitimate in a certain range of parameters. This opens up a posibility of a novel scenario for the beginning of the cosmological expansion.https://doi.org/10.1051/epjconf/201819107010
collection DOAJ
language English
format Article
sources DOAJ
author Ageeva Yulia
Evseev Oleg
Melichev Oleg
Rubakov Valery
spellingShingle Ageeva Yulia
Evseev Oleg
Melichev Oleg
Rubakov Valery
Horndeski Genesis: strong coupling and absence thereof
EPJ Web of Conferences
author_facet Ageeva Yulia
Evseev Oleg
Melichev Oleg
Rubakov Valery
author_sort Ageeva Yulia
title Horndeski Genesis: strong coupling and absence thereof
title_short Horndeski Genesis: strong coupling and absence thereof
title_full Horndeski Genesis: strong coupling and absence thereof
title_fullStr Horndeski Genesis: strong coupling and absence thereof
title_full_unstemmed Horndeski Genesis: strong coupling and absence thereof
title_sort horndeski genesis: strong coupling and absence thereof
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2018-01-01
description We consider Genesis in Horndeski theory as alternative to or completion of inflationary scenario. One of the options free of instabilities at all comological epochs is putative strong coupling regime at the early Genesis stage. We address this issue to see whether classical field theory description of the background evolution at this early stage is consistent, nevertheless. We argue that, indeed, despite naive strong coupling, classical analysis is legitimate in a certain range of parameters. This opens up a posibility of a novel scenario for the beginning of the cosmological expansion.
url https://doi.org/10.1051/epjconf/201819107010
work_keys_str_mv AT ageevayulia horndeskigenesisstrongcouplingandabsencethereof
AT evseevoleg horndeskigenesisstrongcouplingandabsencethereof
AT melichevoleg horndeskigenesisstrongcouplingandabsencethereof
AT rubakovvalery horndeskigenesisstrongcouplingandabsencethereof
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