Geometrical CP violation in the N-Higgs-doublet model

Abstract

Geometrical CP violation is a particular type of spontaneous CP violation in which the vacuum expectation values have phases which are calculable, i.e. stable against the variation of the free parameters of the scalar potential. Although originally suggested within a specific version of the three-Higgs-doublet model, it is a generic phenomenon. We investigate its viability and characteristic features in models with several Higgs doublets. Our work contains both general results and illustrative examples. © 2013 Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica.