Multi-Well Potentials in Quantum Mechanics and Stochastic Processes

TL;DR

This paper constructs and analyzes multi-well potentials in quantum mechanics using extended N=4 supersymmetric formalism, exploring their shape modification, supersymmetry breaking, and applications to tunneling and stochastic processes.

Contribution

It introduces a method to generate exact multi-well potentials with parametric control using N=4 supersymmetry, including cases of partial supersymmetry breaking.

Findings

Derived exact multi-well potentials, symmetric and asymmetric.

Demonstrated shape modification via parameter variation.

Applied results to tunneling and Ornstein-Uhlenbeck process generalization.

Abstract

Using the formalism of extended N=4 supersymmetric quantum mechanics we consider the procedure of the construction of multi-well potentials. We demonstrate the form-invariance of Hamiltonians entering the supermultiplet, using the presented relation for integrals, which contain fundamental solutions. The possibility of partial N=4 supersymmetry breaking is determined. We also obtain exact forms of multi-well potentials, both symmetric and asymmetric, using the Hamiltonian of harmonic oscillator as initial. The modification of the shape of potentials due to variation of parameters is also discussed, as well as application of the obtained results to the study of tunneling processes. We consider the case of exact, as well as partially broken N=4 supersymmetry. The distinctive feature of obtained probability densities and potentials is a parametric freedom, which allows to substantially modify their shape. We obtain the expressions for probability densities under the generalization of the Ornstein-Uhlenbeck process.