High-quality axions in a class of chiral $U(1)$ gauge theories

TL;DR

This paper identifies multiple high-quality axion candidates within chiral U(1) gauge theories, which could explain dark energy or solve the strong CP problem, protected from quantum gravity effects.

Contribution

It introduces a mechanism for high-quality axions in chiral U(1) theories, leveraging gauged symmetries to prevent quantum gravity corrections.

Findings

Multiple axion candidates with high quality

Protection from quantum gravity corrections

Applicability to fuzzy dark matter scenarios

Abstract

We show that there are many candidates for the quintessence and/or the QCD axions in a class of chiral $U(1)$ gauge theories. Their qualities are high enough to serve as the dark energy and/or to solve the strong CP problem. Interestingly, the high quality of axion is guaranteed by the gauged $U(1)$ and $\mathbf{Z}_{2N}$ symmetries and hence free from the non-perturbative quantum gravity corrections. Furthermore, our mechanism can be easily applied to the Fuzzy dark matter axion scenarios.