Classical and Quantum in Cosmology

TL;DR

This paper discusses how to analyze systems in chaotic inflationary cosmology that exhibit both classical and quantum behavior, focusing on disentangling their dynamics and conditions for small quantum corrections.

Contribution

It introduces methods to separate classical and quantum dynamics in inflationary cosmology and explores conditions under which quantum corrections are negligible.

Findings

Methods to distinguish classical and quantum regimes

Conditions for small quantum corrections in cosmological models

Framework for analyzing mixed classical-quantum systems

Abstract

There are several regimes in chaotic inflationary cosmology where some part of the system is classical and some other quantum. I describe how to deal with such systems and how to disentangle their dynamics into classical behaviour and quantum corrections. I also discuss the conditions for quantum corrections to be small.