BRST invariance in Coulomb gauge QCD
A. Andrasi, J. C. Taylor
TL;DR
This paper investigates how non-local, instantaneous terms in the Coulomb gauge QCD Hamiltonian relate to BRST invariance, focusing on a specific order of perturbation theory.
Contribution
It analyzes the compatibility of Coulomb gauge QCD Hamiltonian terms with BRST invariance at the O(g^4) level, clarifying their theoretical consistency.
Findings
Non-local, instantaneous terms can be incorporated into BRST invariance framework.
The analysis is limited to the simplest O(g^4) example.
Provides insights into gauge invariance in Coulomb gauge QCD.
Abstract
In the Coulomb gauge, the Hamiltonian of QCD contains terms of order h^2, identified by Christ and Lee, which are non-local but instantaneous. The question is addressed how these terms fit in with BRST invariance. Our discussion is confined to the simplest, O(g^4), example.
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