Perturbative quantum (in)equivalence of dual σ models in two dimensions
WoS ID: A1996UU04900004
Scopus ID: 0002209347
Various examples of target space duality transformations are investigated up to two loop order in perturbation theory. Our results show that when using the tree level ('naive') transformation rules the dual theories are in general inequivalent at two loops to the original ones (both for the Abelian and the non Abelian duality).