Curvaton reheating in non-minimal derivative coupling to gravity: NO models

TL;DR

This paper investigates the curvaton reheating process within non-minimal derivative coupling models, analyzing energy density behavior, decay scenarios, and reheating temperatures, with a focus on non-oscillating models like exponential potentials.

Contribution

It introduces a detailed analysis of curvaton reheating in non-minimal derivative coupling frameworks for non-oscillating models, including temperature estimation from inflation parameters.

Findings

Energy density during kinetic epoch has complex scale factor dependence

Reheating temperatures are derived for different decay scenarios

Reheating temperature linked to inflation e-folds in exponential potential model

Abstract

The curvaton reheating mechanism in a non-minimal derivative coupling to gravity for any non-oscillating (NO) model is studied. In this framework, we analyze the energy density during the kinetic epoch and we find that this energy has a complicated dependencies of the scale factor. Considering this mechanism, we study the decay of the curvaton in two different scenarios and also we determine the reheating temperatures. As an example the NO model, we consider an exponential potential and we obtain the reheating temperature indirectly from the inflation through of the number of e-folds.