Study of dynamical supersymmetry breaking for the two dimensional   lattice Wess-Zumino model
  A new approach to the study of the transition point in a class of two dimensional Wess-Zumino models is presented. The method is based on the calculation of rigorous lower bounds on the ground state energy density in the infinite lattice limit. Such bounds are useful in the discussion of supersymmetry phase transition. The transition point is then determined and compared with recent results based on large-scale Green Function Monte Carlo simulations with good agreement. 
M. Beccaria, G. F. De Angelis, M. Campostrini and A. Feo