Fields and observables in the massive Schwinger model

Abstract
The correspondences proposed by Coleman, Jackiw, and Susskind for the massive Schwinger model are examined in terms of an underlying field theory formulated in terms of fermion operators and vector potentials. By considering QED as a limit of a massive vector-meson theory, the stability of the proposed correspondences for the gauge-invariant quantities against a fermion mass addition is established.