2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187281A novel scheme to solve the quantum eigenvalue problem through the imaginary-time Green function Monte Carlo method is presented. This method is applicable to the excited states as well as to the ground state of a generic system. We demonstrate the validity of the method with the numerical examples on three simple systems including a discretized sine-Gordon model.RevTeX 5pg with 3 epsf figuresNuclear TheoryHigh Energy Physics - LatticeHigh Energy Physics - TheoryQuantum Physicstext