On the nature of "hidden symmetry" or "accidental degeneracy" in the Kepler problem

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117714We propose a symmetry of the Dirac equation under the interchange of signs of eigenvalues of the Dirac's $K$ operator. We show that the only potential which obeys this requirement is the Coulomb one for both vector and scalar cases.7 pages, conferenceHigh Energy Physics - TheoryOn the nature of "hidden symmetry" or "accidental degeneracy" in the Kepler problemtext