Note on Constrained Cohomology
Francois Delduc, Nicola Maggiore, Olivier Piguet, Sylvain Wolf
Abstract
The cohomology of the BRS operator corresponding to a group of rigid symmetries is studied in a space of local field functionals subjected to a condition of gauge invariance. We propose a procedure based on a filtration operator counting the degree in the infinitesimal parameters of the rigid symmetry transformations. An application to Witten's topological Yang-Mills theory is given.
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