NON-ABELIAN DUALITY FOR OPEN STRINGS

We examine non-abelian duality transformations in the open string case . After gauging the isometries of the target space and developing the general formalism, we study in detail the duals of target spaces with SO(N) isometries which, for the SO(2) case, reduces to the known abeli an T-duals. We apply the formalism to electrically and magnetically ch arged 4D black hole solutions and, as in the abelian case, dual coordi nates satisfy Dirichlet conditions.