Geodesic
On the spectrum of a relativistic bound system in a quasipotential well with barrier
Teoretičeskaâ i matematičeskaâ fizika, Tome 77 (1988) no. 2, pp. 247-252 
E. E. Boos; V. I. Savrin; S. A. Shichanin. On the spectrum of a relativistic bound system in a quasipotential well with barrier. Teoretičeskaâ i matematičeskaâ fizika, Tome 77 (1988) no. 2, pp. 247-252. http://geodesic.mathdoc.fr/item/TMF_1988_77_2_a8/
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     title = {On the spectrum of a~relativistic bound system in a~quasipotential well with barrier},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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Voir la notice de l'article provenant de la source Math-Net.Ru

The features in the spectrum of a relativistic bound system in a quasipotential well with barrier are investigated. It is found that in contrast to a nonrelativistic equation the quasipotential equation gives a state spectrum whose first radial excitation can be much heavier than the ground state. This suggests a possible qualitative explanation of the fact that, for example, an excited electron is not observed in experiments at the currently attained accelerator energies.

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