2026
6/16
OPEN
Date
2026/6/16（Tue）11:00〜12:00
Venue
Kenkyu-Honkan build. 3F Seminar room + Remote
Speaker
Fukutaro Miya (Osaka University)
Language
English
Contact
Yushi Mura/yushi37-AT-post.kek.jp
Abstract
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.