Quantum decoherence of the homogeneous modes during inflation

TL;DR

This paper investigates how quantum decoherence occurs in the early universe during inflation, focusing on the homogeneous modes and their interaction with long wavelength perturbations within a quantum gravity framework.

Contribution

It applies the Born-Oppenheimer approach to analyze decoherence of background modes during power law inflation, highlighting a novel perspective on quantum-to-classical transition in cosmology.

Findings

Decoherence of homogeneous modes due to long wavelength perturbations.

Application of Born-Oppenheimer approach to inflationary quantum gravity.

Insights into quantum-to-classical transition during inflation.

Abstract

In this short note we consider the decoherence of the minisuperspace background degrees of freedom due to the long wavelength scalar and tensor perturbations becoming unobservable within the Born-Oppenheimer approach to the quantum gravity. We apply this to the power law inflation model.