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A new approach to the study of the transition point in a class of twodimensional Wess-Zumino models is presented. The method is based on thecalculation of rigorous lower bounds on the ground state energy density in theinfinite lattice limit. Such bounds are useful in the discussion ofsupersymmetry phase transition. The transition point is then determined andcompared with recent results based on large-scale Green Function Monte Carlosimulations with good agreement.Comment: 4 pages, 1 figure, Talk presented at Quark Confinement and the Hadron  Spectrum VI, Villasimius, Sardinia, Italy, September 21-25, 200

Study of dynamical supersymmetry breaking for the two dimensional lattice Wess-Zumino model