SOFTLY BROKEN N=2 QCD WITH MASSIVE QUARK HYPERMULTIPLETS, II

We analyze the vacuum structure of N = 2, SU(2) QCD with massive quark hypermultiplets, once supersymmetry is softly broken down to N = 0 wi th dilaton and mass spurions. We give general expressions for the low energy couplings of the effective potential in terms of elliptic funct ions to have a complete numerical control of the model. We study in de tail the possible phases of the theories with N-f = 1, 2 flavors for d ifferent values of the bare quark masses and the supersymmetry breakin g parameters and we find a rich structure of first order phase transit ions. The chiral symmetry breaking pattern of the N-f = 2 theory is co nsidered, and we obtain the pion Lagrangian for this model up to two d erivatives. Exact expressions are given for the pion mass and F-pi in terms of the magnetic monopole description of chiral symmetry breaking .