arXiv subjects
Publications and source records attributed to Goran Senjanović.
We review the issue of neutrino mass by concentrating on the minimal extensions of the standard model. In particular, we emphasize the role that gravitation may play in this regard and discuss the central aspects of the see-saw mechanism of generating neutrino mass, including the possibility of the see-saw scale being close to the eelectroweak scale.
We show that for a large range of parameters in a $SU(2)_L\times U(1)$ electroweak theory with two Higgs doublets there may exist classically stable flux tubes of Z boson magnetic field. In a limit of an extra global $\tilde U(1)$ symmetry, these flux-tubes become topologically stable. These results are automatically valid even if $\tilde U(1)$ is gauged.