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Pure Coulomb tensor interaction in the Dirac equation
Authors: M. G. Garcia; S. Pratapsi; P. Alberto; A. S. de Castro
Ref.: Phys. Rev. A 99, 062102-062102-6 (2019)
Abstract: In this work we compute bound solutions for particles and antiparticles of the Dirac equation for a pure tensor radial Coulomb potential plus a constant. We find that the binding depends on the sign of the tensor constant potential, and allows only bound solutions for a certain sign and magnitude of the κ quantum number, which is related to the spin-orbit coupling in the Dirac equation. This relation is reversed for antiparticle solutions. On the other hand, the Coulomb tensor potential, although not binding, changes the range of κ values for which there are bound solutions.
