Superintegrable systems with spin and second-order integrals of motion

Abstract

We investigate a quantum nonrelativistic system describing the interaction of two particles with spin-1/2 and spin 0, respectively. We assume that the Hamiltonian is rotationally invariant and parity conserving and identify all such systems which allow additional integrals of motion that are second-order matrix polynomials in the momenta. These integrals are assumed to be scalars, pseudoscalars, vectors or axial vectors. Among the superintegrable systems obtained, we mention a deformation of the Coulomb potential with the scalar potential and spin–orbital one .