2 Topological aspects of Abelian gauge theory in superfield formalism

We discuss some of the topological features of a non-interacting two (1 + 1)-dimensional Abelian gauge theory in the framework of superfield formulation. This theory is described by a BRST invariant Lagrangian density in the Feynman gauge. We express the local and continuous symmetries, Lagrangian density, topological invariants and symmetric energy momentum tensor of the theory in the language of superfields by exploiting the nilpotent (anti-)BRST-and (anti-)co-BRST symmetries. In fact, the above superfields are defined to deduce these nilpotent symmetries in the framework of superfield formalism.