Is soft breaking of BRST symmetry consistent?
High Energy Physics - Theory
2015-05-30 v3 Mathematical Physics
math.MP
Abstract
A definition of soft breaking of BRST symmetry in the field-antifield formalism is proposed, valid for general gauge theories and arbitrary gauge fixing. The Ward identities for the generating functionals of Green's functions are derived, and their gauge dependence is investigated. We discuss the Gribov-Zwanziger action for the one-parameter family of R_xi gauges. It is argued that gauge theories with a soft breaking of BRST symmetry are inconsistent.
Keywords
Cite
@article{arxiv.1108.4820,
title = {Is soft breaking of BRST symmetry consistent?},
author = {Peter Lavrov and Olaf Lechtenfeld and Alexander Reshetnyak},
journal= {arXiv preprint arXiv:1108.4820},
year = {2015}
}
Comments
1+16 pages; v2: example of section 5 changed to R_xi gauges; v3: small corrections to section 5, one reference added, published version