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تسجيل مستخدم جديدPhase diagram of the lattice Wess-Zumino model from rigorous lower bounds on the energy
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We study the lattice N=1 Wess-Zumino model in two dimensions and we construct a sequence $rho^{(L)}$ of exact lower bounds on its ground state energy density $rho$, converging to $rho$ in the limit $Ltoinfty$. The bounds $rho^{(L)}$ can be computed numerically on a finite lattice with $L$ sites and can be exploited to discuss dynamical symmetry breaking. The transition point is determined and compared with recent results based on large-scale Green Function Monte Carlo simulations with good agreement.
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