Electric-Magnetic duality and the "Loop Representation" in Abelian Gauge   Theories
  Abelian Gauge Theories are quantized in a geometric representation that generalizes the Loop Representation and treates electric and magnetic operators on the same footing. The usual canonical algebra is turned into a topological algebra of non local operators that resembles the order-disorder dual algebra of 't Hooft. These dual operators provide a complete description of the physical phase space of the theories. 
Lorenzo Leal ( Universidad Central de Venezuela )