KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2026winter)

Session

parallel session A: Theory

17 Feb 2026, 10:40

Seminar hall (San-go-kan (Building #3))

Conveners

parallel session A: Theory

• Kohtaroh Miura

14. Analysis of Monopoles Associated with Multi-Step Spontaneous Breaking of Gauge Symmetries

Fukutaro MIYA

17/02/2026, 10:40

The ’t Hooft–Polyakov monopole is absent in the Standard Model, yet Cho and Maison revealed that the electroweak sector admits a spherically symmetric magnetic monopole solution. The resulting Cho–Maison monopole exhibits unresolved theoretical issues, most notably an energy divergence at the spatial origin. In this work, we analyze a scenario in which a ’t Hooft–Polyakov monopole arising in a...

15. Supersymmetric Gauge Theories with Confining Phases

Riku Ishikawa

17/02/2026, 11:00

Confinement is one of the unresolved problems in modern physics. rgies. The analysis of confinement requires non-perturbative approaches due to asymptotic freedom. Supersymmetric gauge theories provide a powerful framework in which such non-perturbative analyses can be carried out. They are more tractable than their non-supersymmetric counterparts.In particular, the holomorphy of the...

16. Generalized CP from non-invertible selection rules

Hajime Otsuka

In this talk, we propose a framework in which fields are labeled by basis elements of a fusion algebra with non-invertible fusion rules. In particular, we consider the case where fields are labeled by conjugacy classes of a finite group rather than its irreducible representations.
When the fusion rules possess a Z2 symmetry identified with charge conjugation, a CPinvariant system can be...