Curvaton reheating allows TeV Hubble scale in NO inflation

TL;DR

This paper explores how curvaton reheating in non-oscillatory inflation models can permit very low inflation scales, such as TeV, expanding the viable parameter space compared to traditional models.

Contribution

It demonstrates that non-oscillatory inflation models with curvaton reheating allow for a broader parameter space, enabling inflation at scales as low as 1 TeV.

Findings

Allowed parameter space is significantly larger in NO models.

Inflation with Hubble scale as low as 1 TeV is feasible.

Curvaton reheating can achieve low-scale inflation in non-oscillatory models.

Abstract

Curvaton reheating is studied in non-oscillatory (NO) models of inflation, with the aim to obtain bounds on the parameters of curvaton models and find out whether low scale inflation can be attained. Using a minimal curvaton model, it is found that the allowed parameter space is considerably larger than in the case of the usual oscillatory inflation models. In particular, inflation with Hubble scale as low as 1 TeV is comfortably allowed.