Landau gauge Jacobian and BRST symmetry

Details Landau gauge Jacobian and BRST symmetry Landau gauge Jacobian and BRST symmetry

2005-09-08

arxiv.org/abs/hep-th/0509053v1

Phys.Lett.B628:176-182,2005

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, uses elsart.cls style file

Scientific paper

10.1016/j.physletb.2005.09.015

We propose a generalisation of the Faddeev-Popov trick for Yang-Mills fields in the Landau gauge. The gauge-fixing is achieved as a genuine change of variables. In particular the Jacobian that appears is the modulus of the standard Faddeev-Popov determinant. We give a path integral representation of this in terms of auxiliary bosonic and Grassman fields extended beyond the usual set for standard Landau gauge BRST. The gauge-fixing Lagrangian density appearing in this context is local and enjoys a new extended BRST and anti-BRST symmetry though the gauge-fixing Lagrangian density in this case is not BRST exact.

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