2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149237We discuss some issues related to the definition of different effective actions, in connection with the work on supersymmetric theories by Seiberg and collaborators. We also comment on the possibility of extending this work to broken supersymmetric theories.18 pages, Latex, Two references added, some minor changes and some additional discussion in concluding section, cover letter removed!High Energy Physics - Theorytext