Two-dimensional N=1,2 Supersymmetric Chiral and Dual Models
  Two-dimensional N=1,2 supersymmetric chiral models and their dual extensions are introduced and canonically quantized. Working within a superspace formalism, the non-manifest invariance under 2D-superPoincare' transformations is proven. The N=1,2 superVirasoro algebras are recovered as current algebras. The non-anomalous quantum invariances under 1D-superdiffeomorphisms (for chiral models) and N=1,2 superconformal transformations (for dual models) are shown to be a consequence of an N=1,2 super-Coulomb gas representation. 
C.P. Constantinidis (1), F.P. Devecchi (2) and F. Toppan (1) ((1)   UFES, Vitoria ES, Brasil, (2) UFPR, Curitiba PR, Brasil)