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SUMMARY:The use of the effective potential for construction of inflationar
 y models with the Gauss-Bonnet term
DTSTART;VALUE=DATE-TIME:20201008T090000Z
DTEND;VALUE=DATE-TIME:20201008T092000Z
DTSTAMP;VALUE=DATE-TIME:20260819T052301Z
UID:indico-contribution-2133@cern.ch
DESCRIPTION:Speakers: Sergey Vernov (Skobeltsyn Institute of Nuclear Physi
 cs\, Lomonosov Moscow State University)\nWe investigate inflationary dynam
 ics in the framework of the Einstein-Gauss-Bonnet gravity using the effect
 ive potential. In the model under consideration\, the inflaton field is no
 n-minimally coupled to the Gauss-Bonnet curvature invariant\, so that the 
 latter appears to be dynamically important. We consider a quartic potentia
 l for the inflaton field\, in particular the one asymptotically connected 
 to the Higgs inflation\, and a class of coupling functions not considered 
 in the earlier works. Keeping in mind the observational bounds on the para
 meters - the amplitude of scalar perturbations $A_s$\, spectral index $n_s
 $ and tensor-to-scalar ratio $r$\, we demonstrate that the models with a q
 uartic potential and the proposed coupling functions are in agreement with
  observation. The talk is based on the paper by E.O. Pozdeeva\, M. Raj Gan
 gopadhyay\, M. Sami\, A.V. Toporensky\, S.Yu. Vernov\, Phys. Rev. D 102 (2
 020) 043525 [arXiv:2006.08027].\n\nhttps://indico.particle.mephi.ru/event/
 35/contributions/2133/
LOCATION:Zoom
URL:https://indico.particle.mephi.ru/event/35/contributions/2133/
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