Inflection point inflation and reheating

TL;DR

This paper examines how reheating dynamics influence the predictions of inflection point inflation models, including non-minimal coupling scenarios like Higgs inflation, by parametrizing reheating effects and analyzing their impact on observational parameters.

Contribution

It extends the analysis of inflection point inflation to large field values and incorporates reheating effects, providing a comprehensive framework for understanding their influence on inflationary predictions.

Findings

Reheating significantly alters the favored parameter space of inflection point inflation.

Reheating temperature and equation of state impact inflationary observables.

Application to Higgs and $B-L$ Higgs inflation models demonstrates the framework's relevance.

Abstract

We revisit the inflection point inflation with an extended discussion to large field values and consider the reheating effects on the inflationary predictions. Parametrizing the reheating dynamics in terms of the reheating temperature and the equation of state during inflation, we show how the observationally favored parameter space of inflection point inflation is affected by reheating dynamics. Consequently, we apply the general results to the inflation models with non-minimal coupling, such as the SM Higgs inflation and the $B-L$ Higgs inflation.