Path Integrals, BRST Identities and Regularization Schemes in Nonstandard Gauges
High Energy Physics - Theory
2009-10-31 v1
Abstract
The path integral of a gauge theory is studied in Coulomb-like gauges. The Christ-Lee terms of operator ordering are reproduced {\it{within}} the path integration framework. In the presence of fermions, a new operator term, in addition to that of Christ-Lee, is discovered. Such kind of terms is found to be instrumental in restoring the invariance of the effective Lagrangian under a field dependent gauge transformation, which underlies the BRST symmetry. A unitary regularization scheme which maintains manifest BRST symmetry and is free from energy divergences is proposed for a nonabelian gauge field.
Cite
@article{arxiv.hep-th/9811190,
title = {Path Integrals, BRST Identities and Regularization Schemes in Nonstandard Gauges},
author = {Hai-cang Ren},
journal= {arXiv preprint arXiv:hep-th/9811190},
year = {2009}
}
Comments
40 pages and 2 figures