Comments on the Gauge Fixed BRST Cohomology and the Quantum Noether Method
arXiv:hep-th/0306127 · doi:10.1016/j.physletb.2004.03.035
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.
24 pages, example section improved, short version without background material will appear in Physics Letters B
References in corpus (3)
Cited by in corpus (6)
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