Non-minimal (self-)running inflation: metric vs. Palatini formulation

Abstract

We consider a model of quartic inflation where the inflaton is coupled non-minimally to gravity and the self-induced radiative corrections to its effective potential are dominant. We perform a comparative analysis considering two different formulations of gravity, metric or Palatini, and two different choices for the renormalization scale, widely known as prescription I and II. Moreover we comment on the eventual compatibility of the results with the final data release of the Planck mission.

Comments: 21 pages, 5 figures, matches the published version. The article improves arXiv:1801.08810 with a detailed study of radiative self-corrections