Year: 2024
Type: article
Abstract: We show that, if there are conserved flavor symmetries, then some properties of a monopole can depend on θ , even when a fermion is massless. The quantized nature of global symmetries and the fractional nature of the Witten effect can lead to interesting structure. Seen from another point of view, aside from possibly breaking baryon and lepton flavor symmetries (the Callan-Rubakov effect), monopole boundary conditions can also break the axial symmetry that otherwise could have been used to remove θ from the Lagrangian. As an example, in a toy model, we calculate the θ dependence of the mass of the monopole and properties of the nonzero charge density surrounding the monopole. Published by the American Physical Society 2024
Authors: Anson Hook, Clayton Ristow
Institution: University of Maryland, College Park
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funder: National Science Foundation
OpenAlex ID: W4403486032