Exact superpotentials in N=1 theories with flavor and their matrix model formulation

In this Letter we investigate the effective superpotential of an N = 1 U (N-c) gauge theory with one adjoint chiral multiplet and N-f fundamental chiral multiplets. We propose a matrix model prescription in which only matrix model diagrams with less than two boundaries contribute to the gauge theory effective superpotential. This prescription reproduces exactly the known gauge theory physics for all N-f and N-c. For N-f less than or equal to N-c - 1 this is given by the Affleck-Dine-Sciberg superpotential. For N-f greater than or equal to N-c + 1 we present arguments leading to the conclusion that the dynamics of these theories is also reproduced by the matrix model. (C) 2003 Published by Elsevier Science B.V.