Dirac Hamiltonian in a supersymmetric framework

Abstract

We investigate the most general form of the one-dimensional Dirac Hamiltonian H_D in the presence of scalar and pseudoscalar potentials. To seek embedding of supersymmetry (SUSY) in it, as an alternative procedure to directly employing the intertwining relations, we construct a quasi-Hamiltonian $\mathcal{K}$ , defined as the square of H_D, to explore the consequences. We show that the diagonal elements of $\mathcal{K}$ under a suitable approximation reflect the presence of a superpotential, thus proving a useful guide in unveiling the role of SUSY. For illustrative purposes, we apply our scheme to the transformed one-dimensional version of the planar electron Hamiltonian under the influence of a magnetic field. We generate spectral solutions for a class of isochronous potentials.