Séminaire de Physique Théorique

Spontaneous Hopf Fibration in the 2HDM

by Dr Steven Cotterill (The University of Manchester, UK)

Salle 1180, bâtiment E2 (Salle des séminaires )

Salle 1180, bâtiment E2

Salle des séminaires


We show that energetic considerations enforce a Hopf fibration of the Standard Model topology within the 2HDM whose potential has either an SO(3) or U(1) Higgs-family symmetry. This can lead to monopole and vortex solutions. We find these solutions, characterise their basic properties and demonstrate the nature of the fibration along with the connection to Nambu's monopole solution. We point out that breaking of the U(1) EM in the core of the defect can be a feature which leads to a non-zero photon mass there.