Lebedev, Oleg2014-03-142014-03-141998-07-08etd-62198-132411http://hdl.handle.net/10919/30640An alternative approach to the problem of CP-violation is presented. It is based on the possibility of spontaneous CP-breakdown in models with two Higgs doublets. General features of the phenomenon such as stability of the vacuum and the existence of a light axion are discussed. We investigate the feasibility of spontaneously broken CP in the minimal supersymmetric models - the MSSM and NMSSM. The latter is shown to be experimentally viable. The phenomenological implications of the model such as CP-violating effects in the kaon systems and a nonzero neutron electric dipole moment are studied.In Copyrightspontaneous symmetry breakingsupersymmetryaxionradiative correctionsCP-violationDissertationhttp://scholar.lib.vt.edu/theses/available/etd-62198-132411/