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arXiv · hep-th/0306127

Comments on the Gauge Fixed BRST Cohomology and the Quantum Noether Method

Glenn Barnich·Tobias Hurth·Kostas Skenderis
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Abstract

We discuss in detail the relation between the gauge fixed and gauge invariant BRST cohomology. We showed previously that in certain gauges some cohomology classes of the gauge-fixed BRST differential do not correspond to gauge invariant observables. We now show that in addition ``accidental'' conserved currents may appear. These correspond one-to-one to observables that become trivial in this gauge. We explicitly show how the gauge-fixed BRST cohomology appears in the context of the Quantum Noether Method.

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Glenn Barnich, Tobias Hurth, Kostas Skenderis. 2004-03-24. Comments on the Gauge Fixed BRST Cohomology and the Quantum Noether Method. https://doi.org/10.1016/j.physletb.2004.03.035

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