A Dynamic Modification to Sneutrino Chaotic Inflation

TL;DR

This paper proposes a model where a right-handed scalar neutrino drives inflation with a modified potential, resulting in observable tensor-to-scalar ratios and natural supersymmetry breaking, aligning with PLANCK 2015 data.

Contribution

It introduces a dynamic modification to sneutrino chaotic inflation involving a supersymmetric QCD sector, producing a flatter potential and consistent neutrino properties.

Findings

Inflation potential is a deformed quadratic form leading to a larger tensor-to-scalar ratio.

Supersymmetry breaking naturally occurs at the end of inflation.

Model aligns with PLANCK 2015 observational constraints.

Abstract

We consider a right-handed scalar neutrino as the inflaton which carries a gravitational coupling with a supersymmetric QCD sector responsible for breaking supersymmetry dynamically. The framework suggests an inflaton potential which is a deformed version of the quadratic chaotic inflation leading to a flatter potential. We find that this deformation results a sizable tensor to scalar ratio which falls within the allowed region by PLANCK 2015. At the same time supersymmetry breaking at the end of inflation can naturally be induced in this set-up. The symmetries required to construct the framework allows the neutrino masses and mixing to be of right order.