The non-Abelian bosonization of fermion fields in (1+1) dimensions by the path integral method*

Using the path integral method for handling the anomaly problem under the comoving representation, we present a unified scheme for deriving the bosonization of fermion fields in (1+1) dimensions. The massless Thirring model with an external electric field, and the Gross-Neveu model with internal SU(N) symmetry are discussed in some detail, as two examples, for Abelian and non-Abelian bosonization, respectively