Supersymmetric models with product groups and field dependent gauge couplings

We study the dilaton-dependence of the effective action for N = 1, SU(N1) × SU(N2) models with one generation of vectorlike matter transforming in the fundamental of both groups. We treat in detail the confining and Coulomb phases of these models writing explicit expressions in many cases for the effective superpotential. We can do so for the Wilson superpotentials of the Coulomb phase when N2 = 2, N1 = 2,4. In these cases the Coulomb phase …