Constructive Comments on QED2 in Curved Spacetime - I
  In this paper an axiomatic formulation of the Schwinger Model in curved spacetime is considered. The mathematical approach utilized is that specified by Hollands and Wald in [1]. We will attempt to present the theory in this context, exhibiting the operator product expansions (OPEs) that define the theory in a follow-on paper. 
T. Mark Harder and Thomas K. DeLillo
math-ph gr-qc math.MP