Article,
Estimating ground-state energies in supersymmetric quantum mechanics: (1) Broken case
Zeitschrift für Physik C Particles and Fields, 20 (3): 213--225 (1983)
Abstract
For a class of the dynamically broken supersymmetric quantum-mechanical models proposed by Witten, we examine various methods of estimating the ground-state energy, including the instanton method developed by Salomonson and van Holten. We show that no existing method is entirely satisfactory, and develop a method using all stationary points of the Schrödinger potential (including those in the complex plane) in conjunction with the Rayleigh-Ritz variational method, thus combining perturbative and nonperturbative effects. Generalisations to more than one degree of freedom and to field theory are discussed.
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