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Regularization of Single Field Inflation Models

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published
Article number023502
<mark>Journal publication date</mark>15/01/2023
<mark>Journal</mark>Physical Review D - Particles, Fields, Gravitation and Cosmology
Issue number2
Volume107
Publication StatusPublished
Early online date3/01/23
<mark>Original language</mark>English

Abstract

There are many single field inflationary models that are consistent with the recent Planck 2018 measurements of the spectral index
n
s
and tensor-to-scalar ratio
r
. Despite good agreement with observational data some of these models suffer from having unregularized potentials which would produce a collapsing universe shortly after the end of inflation. In this paper we show that how one chooses to correct the behavior potential toward the end of inflation can have a significant effect on the inflationary predictions of the model, specifically in the case of quartic hilltop and radiatively corrected Higgs inflation.