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

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.

6+2 pages, 1 table, 1 supplemental material; published on PHYSICAL REVIEW LETTERS

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