2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51406This article illustrates the bound states of Kemmer equation for spin-1 particles. The asymptotic, exact and Coulomb field solutions are obtained by using action principle. In the conclusion the energy spectrum of spin-1 particles moving in a Coulomb potential compared with the energy spectrum of spin-0 and spin-1/2 particles.LaTex file, 14 pages, no figures, revised for publicationHigh Energy Physics - Theorytext