Pure Coulomb tensor interaction in the Dirac equation
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2019-06-07
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Garcia, M. G.
Pratapsi, S.
Alberto, P. [UNESP]
De Castro, A. S. [UNESP]
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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.
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Physical Review A, v. 99, n. 6, 2019.