T-duality in massive integrable field theories: the homogeneous and complex sine-Gordon models Original Research Article

The T-duality symmetries of a family of two-dimensional massive integrable field theories defined in terms of asymmetric gauged Wess–Zumino–Novikov–Witten actions modified by a potential are investigated. These theories are examples of massive non-linear sigma models and, in general, T-duality relates two different dual sigma models perturbed by the same