Amplitude of superhorizon cosmological perturbations

TL;DR

This paper examines how reheating affects large-scale cosmological perturbations and gravitational waves, correcting previous misconceptions about their behavior during cosmic transitions and their quantization.

Contribution

It provides corrected analysis on the joining of perturbations at cosmological transitions and clarifies the quantization process of cosmological perturbations.

Findings

Reheating influences super-horizon density perturbations and gravitational waves.

Corrects previous claims about the joining of perturbations at transitions.

Clarifies the quantization of cosmological perturbations.

Abstract

We study the influence of reheating on super-horizon density perturbations and gravitational waves. We correct wrong claims [L. P. Grishchuk Phys. Rev. D 50, 7154 (1994) and gr-qc/9801011] about the joining of perturbations at cosmological transitions and about the quantization of cosmological perturbations.