T-DUALITY IN SIGMA MODELS WITH KALUZA–KLEIN METRIC AS ELECTRIC–MAGNETIC DUALITY
Abstract
It is shown that T-duality in a σ-model with Kaluza–Klein metric, with or without a torsion term, can be interpreted as electric–magnetic duality for some of their solitonic solutions. Actually Buscher's duality transformation interchanges the topological and Noether charges.