Repercussions of the Peccei-Quinn axion on QCD
High Energy Physics - Phenomenology
2025-03-26 v2 High Energy Physics - Lattice
High Energy Physics - Theory
Nuclear Theory
Abstract
The axion, originally postulated by Peccei and Quinn to solve the strong CP problem, has become of great interest in particle and astroparticle phenomenology. Yet it has a problem. It is widely assumed that the axion leaves the nonperturbative features of QCD unscathed. This is, however, not the case. On the contrary, the axion extension is found to be in conflict with seminal results on the low-energy properties of QCD. The key is that the anomalous coupling of the axion to the gauge bosons can be integrated out, leaving behind a path integral over topologically trivial gauge potentials.
Cite
@article{arxiv.2307.08310,
title = {Repercussions of the Peccei-Quinn axion on QCD},
author = {Gerrit Schierholz},
journal= {arXiv preprint arXiv:2307.08310},
year = {2025}
}
Comments
11 pages, expanded by new findings, including two figures; matches published version