2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196161The quantum properties of localized finite energy solutions to classical Euler-Lagrange equations are investigated using the method of collective coordinates. The perturbation theory in terms of inverse powers of the coupling constant $g$ is constructed, taking into account the conservation laws of momentum and angular momentum (invariance of the action with respect to the group of motion M(3) of 3-dimensional Euclidean space) rigorously in every order of perturbation theory.LaTex, 17 pages typos correctedHigh Energy Physics - Theorytext