Affleck-Dine leptogenesis and its backreaction to inflaton dynamics

TL;DR

This paper explores how Affleck-Dine leptogenesis influences inflaton behavior in supergravity models, aligning neutrino mass predictions with cosmological observations.

Contribution

It analyzes the backreaction effects of leptogenesis on inflaton dynamics within hybrid and chaotic inflation models in supergravity, providing neutrino mass constraints.

Findings

Neutrino mass bounds consistent with observations

Inflaton dynamics affected by leptogenesis backreaction

Predictions align with spectral index and tensor-to-scalar ratio

Abstract

We investigate the backreaction of the Affleck-Dine leptogenesis to inflaton dynamics in the F-term hybrid and chaotic inflation models in supergravity. We determine the lightest neutrino mass in both models so that the predictions of spectral index, tensor-to-scalar ratio, and baryon abundance are consistent with observations.