Gauged Axions and their QCD Interactions

TL;DR

This paper reviews axion models linked to anomalous gauge symmetries, focusing on their QCD interactions, vacuum misalignment mechanisms, and the resulting periodic potentials that generate axion masses.

Contribution

It provides a concise overview of axion models with anomalous gauge symmetries and discusses their phenomenological implications and mass generation mechanisms.

Findings

Axions associated with anomalous abelian gauge symmetries exhibit vacuum misalignment.

Periodic potentials from phase transitions generate axion masses.

The paper summarizes key phenomenological features of these axion models.

Abstract

We present a brief overview of axion models associated to anomalous abelian (gauge) symmetries, discussing their main phenomenological features. Among these, the mechanism of vacuum misalignment introduced at the QCD and at the electroweak phase transitions, with the appearance of periodic potentials, responsible for the generation of a mass for these types of axions.