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SUMMARY:More accurate slow-roll approximations for inflation in scalar-ten
 sor theories
DTSTART;VALUE=DATE-TIME:20261029T135500Z
DTEND;VALUE=DATE-TIME:20261029T141000Z
DTSTAMP;VALUE=DATE-TIME:20261031T060815Z
UID:indico-contribution-6260@cern.ch
DESCRIPTION:Speakers: Maria Skugoreva ()\nWe propose new versions of the s
 low-roll approximation for inflationary models with nonminimally coupled s
 calar fields. We derive more precise expressions for the standard slow-rol
 l parameters as functions of the scalar field. To verify the accuracy of t
 he proposed approximations\, we consider inflationary models with the indu
 ced gravity term and the fourth-order monomial potential. For specific val
 ues of the model parameters\, this model is the well-known Higgs-driven in
 flationary model. We investigate the inflationary dynamics in the Jordan f
 rame and come to the conclusion that the proposed versions of the slow-rol
 l approximation are not only more accurate at the end of inflation\, but a
 lso give essentially more precise estimations for the tensor-to-scalar rat
 io r and the amplitude of scalar perturbations As.\n\nhttps://indico.parti
 cle.mephi.ru/event/626/contributions/6260/
LOCATION: Conference Hall 5
URL:https://indico.particle.mephi.ru/event/626/contributions/6260/
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