KEK Theory Seminar(Dr.Yu Hamada)

CategoryTheory Seminar
Start2020/05/12(Tue)11:00 AM
End2020/05/12(Tue)12:00 PM
VenueOnline (Zoom)
TitleTopological Nambu monopole in two Higgs doublet models
SpeakerDr. Yu Hamada ( Kyoto University )


Two Higgs doublet model (2HDM), in which one more Higgs doublet is added to the Standard Model(SM), is one of the most simple extensions of the SM. 2HDM allows a solitonic object called as the Nambu monopole, which is a magnetic monopole attached with two vortex strings. We show that the monopole is topologically stable when the Higgs potential has a global U(1) symmetry and a Z2Z2 symmetry. We also discuss phenomenological implications of the monopole. This talk is based on arXiv:1904.09269 and 2003.08772.