Particle Production of Coherently Oscillating Nonclassical Inflaton in FRW Universe

TL;DR

This paper investigates particle production from a coherently oscillating inflaton in an FRW universe using coherent and squeezed state formalisms, comparing semiclassical and classical gravity scenarios.

Contribution

It introduces a formalism for analyzing inflaton particle production in semiclassical gravity with coherent and squeezed states, offering a comparison to classical gravity models.

Findings

Coherent and squeezed states affect particle production rates.

Semiclassical gravity yields different particle production results than classical gravity.

The formalism provides new insights into quantum effects during inflation.

Abstract

We study particle production of coherently oscillating inflaton in the semiclassical theory of gravity by representing inflaton in coherent and squeezed state formalisms. A comparative study of the inflaton in classical gravity with coherent state inflaton in semiclassical gravity is also presented.