Alternative to Axions
arXiv:2504.21078 · doi:10.1103/4k8p-gpgr
Abstract
The CP-violating phase which arises below chiral symmetry breaking in a non-Abelian gauge theory is ``secretly" the magnetic dual of the flux of a -form gauge field. Thus the discharge of this -form flux by Schwinger production of charged membranes reduces the total CP-violating phase toward zero. This can safely restore CP symmetry to within the observational limits, $θ_{\cancel{\tt CP}} \la 10^{-10}$, while also satisfying all limits from cosmology, when the charge and the tension of the gauge field sources are in the $\la keV$ range.
12+1 pages, LaTeX; accepted as a Letter to PRD; title changed in journal; references and discussion added, typos corrected