Reheating the Universe at Criticality

TL;DR

This paper discusses how reheating dynamics influence inflationary predictions, especially in inflection point inflation models, and highlights their potential to produce detectable tensor-to-scalar ratios in future CMB experiments.

Contribution

It provides a comprehensive analysis of reheating effects on inflationary models, extending inflection point inflation to the trans-Planckian regime and exploring their observational implications.

Findings

Reheating dynamics significantly affect inflationary predictions.

Inflection point inflation can produce detectable tensor-to-scalar ratios.

Extended models accommodate trans-Planckian inflaton fields.

Abstract

We present the general discussion on the inflection point inflation with small or large inflaton fields and show the effects of reheating dynamics on the inflationary predictions. In order to compare the model predictions with precisely measured CMB anisotropies and constrain the inflation models, the knowledge of the reheating dynamics is required. Inflection point inflation extended to the trans-Planckian regime can accommodate a sizable tensor-to-scalar ratio at the detectable level in the future CMB experiments.