Confinement, soft supersymmetry breaking and theta parameter dependence in the Seiberg-Witten model

By using the standard perturbation theory we study the mass and theta parameter dependence of the Seiberg-Witten theory with SU(2) gauge group, supplemented with a N = 1 supersymmetric as well as a smaller nonsupersymmetric masses. Confinement persists at all values of the bare vacuum parameter theta(ph); at theta(ph) = -pi, pi, 3 pi, ..., however, the ground state is doubly degenerate and CP invariance is spontaneously broken a la Dashen. Due to the instanton-induced renormalization effects the low energy effective theta parameter remains small irrespectively of theta(ph) as long as the supersymmetry breaking (e.g. gaugino) mass is sufficiently small. Oblique confinement does not take place in this model.