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SUMMARY:The predictions of inflationary models modified by a non-minimal c
 oupling between the scalar field and curvature
DTSTART;VALUE=DATE-TIME:20261029T134000Z
DTEND;VALUE=DATE-TIME:20261029T135500Z
DTSTAMP;VALUE=DATE-TIME:20261024T054250Z
UID:indico-contribution-6258@cern.ch
DESCRIPTION:Speakers: Evgenii Dentsel (Assistant professor)\nPossible corr
 ections to cosmological inflation models based on scalar-tensor gravity ar
 e considered. The influence of non-minimal coupling between a scalar field
  and curvature on cosmological dynamics and parameters of cosmological per
 turbations is examined\, with particular emphasis on corrections arising f
 rom a specific parametrization of this coupling. \n\nCosmological models b
 ased on physically motivated scalar field potentials are analyzed for vari
 ous non-minimal coupling functions\, encompassing cases in which the influ
 ence of the coupling on both the cosmological dynamics and the evolution o
 f the scalar field is either significant or negligible.\n\nSpecial attenti
 on is devoted to estimating deviations of scalar-tensor gravity models fro
 m the Einstein gravity case. These deviations are assessed by applying mod
 ern constraints on the parameters of cosmological perturbations. To provid
 e a model-independent analysis of the corrections induced by non-minimal c
 oupling\, a classification of inflationary scenarios is introduced. This c
 lassification is based on the series expansion of the tensor-to-scalar rat
 io as a function of the spectral index of scalar perturbations. It is show
 n that the proposed approach incorporates well-known inflationary models a
 s special cases.\n\nhttps://indico.particle.mephi.ru/event/626/contributio
 ns/6258/
LOCATION:Sevastopol Hotel
URL:https://indico.particle.mephi.ru/event/626/contributions/6258/
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