2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202834We study classical solutions of the vector O(3) sigma model in (2+1) dimensions, spontaneously broken to O(2)xZ2. The model possesses Skyrmion-type solutions as well as stable domain walls which connect different vacua. We show that different types of waves can propagate on the wall, including waves carrying a topological charge. The domain wall can also absorb Skyrmions and, under appropriate initial conditions, it is possible to emit a Skyrmion from the wall.plain tex : 15 pages, 21 Postscript figures, uses epsf.texHigh Energy Physics - Theorytext