The QCD axion beyond the classical level: A lattice study
High Energy Physics - Lattice
2019-03-26 v3 High Energy Physics - Phenomenology
High Energy Physics - Theory
Nuclear Theory
Abstract
The axion is a hypothetical elementary particle postulated by the Peccei-Quinn theory to resolve the strong CP problem in QCD. If axions exist and have low mass, they are a candidate for dark matter as well. So far our knowledge of the properties of the QCD axion rests on semi-classical arguments and effective theory. In this work we perform, for the first time, a fully dynamical investigation of the Peccei-Quinn theory, focussing on the axion mass, by simulating the theory on the lattice. The results of the simulation are found to be in conflict with present axion phenomenology.
Keywords
Cite
@article{arxiv.1802.09339,
title = {The QCD axion beyond the classical level: A lattice study},
author = {Y. Nakamura and G. Schierholz},
journal= {arXiv preprint arXiv:1802.09339},
year = {2019}
}
Comments
16 pages, 9 figures; theoretical considerations refined, numerical results on larger lattices added, text corrected and improved