Generalizations and UV completions of Cho–Maison monopole

概要

Magnetic monopoles are important topological solitons predicted in gauge theories with spontaneous symmetry breaking. In the electroweak theory, Cho and Maison constructed a monopole configuration by allowing a singular behavior at the origin. Since its essential structure is tied to electroweak-type symmetry breaking, analogous monopoles are expected to arise in a wider class of gauge theories.
In this talk, I will show that Cho-Maison-like monopole configurations can indeed be constructed in broad classes of models. I will also discuss how the electroweak Cho-Maison monopole can be embedded into a regular ‘t Hooft-Polyakov monopole as its low-energy effective description. In particular, I will show that a monopole in the Pati-Salam model reduces to the electroweak Cho-Maison monopole after heavy degrees of freedom are integrated out. This provides a possible ultraviolet origin of the Cho-Maison monopole and clarifies its generality beyond the Standard Model.

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