  Supersymmetry, like Poincare symmetry, is softly broken at finite lattice
spacing provided the gaugino mass term is strongly suppressed. Domain wall
fermions provide the mechanism for suppressing this term by approximately
imposing chiral symmetry on the lattice. We present the first numerical
simulations of N=1 supersymmetric SU(2) Yang-Mills on the lattice in d=4
dimensions using domain wall fermions.
