Algebraic Properties of BRST Coupled Doublets

Abstract

We characterize the dependence on doublets of the cohomology of an arbitrary nilpotent differential s (including BRST differentials and classical linearized Slavnov-Taylor (ST) operators) in terms of the cohomology of the doublets-independent component of s. All cohomologies are computed in the space of local integrated formal power series. We drop the usual assumption that the counting operator for the doublets commutes with s (decoupled doublets) and discuss the general case where the counting operator does not commute with s (coupled doublets). The results are purely algebraic and do not rely on power-counting arguments.

Some explanations enlarged, references added

References in corpus (2)

• Algebraic Aspects of the Background Field Method
• An Approach to the Equivalence Theorem by the Slavnov-Taylor Identities

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