Dressing cosets revisited

We present an alternative algebraic derivation of the dual pair of non-linear σ-models based on the ‘dressing cosets’ extension of the Poisson–Lie T-duality (Klimčík and Ševera, 1996 [2]). Then we generalize the result to dual pairs of Lagrangians not considered in (Klimčík and Ševera, 1996 [2]). Our generalization turns out to incorporate the dualisable models constructed by Sfetsos (1999) [5].