1201.4720 (P. M. Lavrov et al.)

Soft breaking of BRST symmetry and gauge dependence    [PDF]

P. M. Lavrov, O. V. Radchenko, A. A. Reshetnyak

We continue investigation of soft breaking of BRST symmetry in the
Batalin-Vilkovisky (BV) formalism beyond regularizations like dimensional ones
used in our previous paper [JHEP 1110 (2011) 043, arXiv:1108.4820 [hep-th]]. We
generalize a definition of soft breaking of BRST symmetry valid for general
gauge theories and arbitrary gauge fixing. The gauge dependence of generating
functionals of Green's functions is investigated. It is proved that such
introduction of a soft breaking of BRST symmetry into gauge theories leads to
inconsistency of the conventional BV formalism.

View original: http://arxiv.org/abs/1201.4720