2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/184335We discuss some aspects of noncommutative quantum field theories obtained from the Seiberg-Witten limit of string theories in the presence of an external B-field. General properties of these theories are studied as well as the phenomenological potential of noncommutative QED.15 pages. Based on talks at the 9th Adriatic Meeting (Dubrovnik, Croatia) and at String Phenomenology 2003 (Durham, UK). v2 references addedHigh Energy Physics - Theorytext