2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54223It is shown that nonvacuum pseudoparticles can account for quantum tunneling and metastability. In particular the saddle-point nature of the pseudoparticles is demonstrated, and the evaluation of path-integrals in their neighbourhood. Finally the relation between instantons and bounces is used to derive a result conjectured by Bogomolny and Fateyev.Latex, 16 pages, no figuresHigh Energy Physics - Theorytext