QCD axion from broken scale symmetry
High Energy Physics - Theory
2026-05-15 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
A consistent non-compact axion cosmology requires a non-periodic field, an effective field theory valid sufficiently above the inflationary scale, and a small non-QCD contribution to the potential that tilts the axionic vacuum landscape in order to trigger a timely domain-wall collapse. All conditions can be met by the dilaton -- the pseudo-Nambu-Goldstone boson of spontaneously broken approximate scale invariance.
Cite
@article{arxiv.2605.14684,
title = {QCD axion from broken scale symmetry},
author = {Georgios K. Karananas and Mikhail Shaposhnikov},
journal= {arXiv preprint arXiv:2605.14684},
year = {2026}
}
Comments
19 pages, 2 figures