2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40063We analyze the fully relativistic, field-theoretical treatment of the scalar Coulomb problem. We work in a truncated Hilbert-Fock space containing the two-constituent states and the two-constituent-and-one-massless-exchange-particle states. Self-energy contributions are dominant for large values of the coupling constant. Using the covariant formulation of the self-energy does not alter these results significantly. Both the weak-coupling limit and the heavy-mass limit lead to the non-relativistic results.8 pages, 5 postscript figuresHigh Energy Physics - Phenomenologytext