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Landau gauge Jacobian and BRST symmetry

M. Ghiotti·A. C. Kalloniatis·A. G. Williams
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Abstract

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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M. Ghiotti, A. C. Kalloniatis, A. G. Williams. 2005-09-08. Landau gauge Jacobian and BRST symmetry. https://doi.org/10.1016/j.physletb.2005.09.015

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