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A Dirac particle in general dimensions moving in a 1/r potential is shown tohave an exact N = 2 supersymmetry, for which the two supercharge operators areobtained in terms of (a D-dimensional generalization of) the Johnson-Lippmannoperator, an extension of the Runge-Lenz-Pauli vector that relativisticallyincorporates spin degrees of freedom. So the extra symmetry (S(2))in thequantum Kepler problem, which determines the degeneracy of the levels, is sorobust as to accommodate the relativistic case in arbitrary dimensions.Comment: 4 pages, 1 figur

Exact supersymmetry in the relativistic hydrogen atom in general dimensions—supercharge and the generalized Johnson-Lippmann operator