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arxiv: hep-th/0509053 · v1 · submitted 2005-09-08 · ✦ hep-th

Landau gauge Jacobian and BRST symmetry

M. Ghiotti (CSSM , Adelaide) , A.C. Kalloniatis (CSSM , A.G. Williams (CSSM This is my paper
classification ✦ hep-th
keywords brstgaugegauge-fixinglandaudensityextendedfaddeev-popovfields
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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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