Regularization of Single Field Inflation Models by Josh Hoffmann et al. on Thursday 24 November

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 behaviour potential towards 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.

arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2208.09390v2