Axion mass in the case of post-inflationary Peccei-Quinn symmetry breaking

TL;DR

This paper reviews axion dark matter predictions assuming the Peccei-Quinn symmetry is restored after inflation, focusing on its implications for axion mass and dark matter composition.

Contribution

It provides a comprehensive review of axion dark matter scenarios in the post-inflationary Peccei-Quinn symmetry breaking context.

Findings

Axion can account for cold dark matter in this scenario.

Predictions for axion mass range consistent with dark matter abundance.

Implications for axion detection experiments.

Abstract

The axion not only solves the strong CP puzzle, but it also may be the main constituent of cold dark matter. We review the axion dark matter predictions for the case that the Peccei-Quinn symmetry is restored after inflation.