A new realization for the d=2 topological algebra

Abstract

We derive topological algebras for two-dimensional models admitting a d=[δ,b] decomposition (with b the BRST operator). In general, the topological algebra we obtain is not derived from the twisting of an N=2 supersymmetry algebra. We show, for the particular case of an Abelian model described by a ladder of matter, how to derive N=2 supersymmetry generators from the odd generators of the topological algebra.