Non-invertible symmetry as an axion-less solution to the strong CP problem
High Energy Physics - Phenomenology
2025-05-13 v1 High Energy Physics - Theory
Abstract
We use a non-invertible symmetry to construct a three-zero texture for the down-type quark mass matrix, which can resolve the strong CP problem without invoking the axion, in four-dimensional spacetime with three quark families in QCD. We assume CP invariance at the fundamental high-energy scale.
Keywords
Cite
@article{arxiv.2505.05142,
title = {Non-invertible symmetry as an axion-less solution to the strong CP problem},
author = {Qiuyue Liang and Tsutomu T. Yanagida},
journal= {arXiv preprint arXiv:2505.05142},
year = {2025}
}