2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49869We derive massless and massive representations of all SU(2,2/N) superalgebras by using superfields defined in "harmonic superspace". This method allows one to easily construct "short superfields" which are relevant in the analysis of the AdS/CFT correspondence.Talk given at the TMR Conference on Quantum Aspects of Gauge Theories, Supersymmetry and Unification, Paris, 1-7 September 1999High Energy Physics - Theorytext