Darboux transformations and hidden quadratic supersymmetry of the one-dimensional stationary Dirac equation

Details Darboux transformations and hidden quadratic supersymmetry of the one-dimensional stationary Dirac equation Darboux transformations and hidden quadratic supersymmetry of the one-dimensional stationary Dirac equation

2001-11-30

arxiv.org/abs/quant-ph/0111163v1

Physics

Quantum Physics

11 pages, no figure

Scientific paper

A matricial Darboux operator intertwining two one-dimensional stationary Dirac Hamiltonians is constructed. This operator is such that the potential of the second Dirac Hamiltonian as well as the corresponding eigenfunctions are determined through the knowledge of only two eigenfunctions of the first Dirac Hamiltonian. Moreover this operator together with its adjoint and the two Hamiltonians generate a quadratic deformation of the superalgebra subtending the usual supersymmetric quantum mechanics. Our developments are illustrated on the free particle case and the generalized Coulomb interaction. In the latter case, a relativistic counterpart of shape-invariance is observed.

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