2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48569Synthesizing older ideas about the 1/N expansion in gauge theory, the quantum mechanics of black holes, and quantum field theory in Anti de Sitter space, a new correspondence between gauge theory and quantum gravity has illuminated both subjects.10 pp., opening lecture at the Erice School on Subnuclear PhysicsHigh Energy Physics - Phenomenologytext