2001/07/11 by Sergio Iguri, Sergio M. Iguri, Iguri, Sergio M. +2
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/0107095
9 pages, Latex, no figures
arxiv created 2001/07/12 · arxiv updated 2009/11/30
We derive a generalized Nielsen identity for the case of Yang-Mills theories that include some classical fields. We discuss under which circumstances the effective action of the classical fields (i.e., after integration of quantum fields) becomes gauge fixing independent. We conclude that classical test fields provide a physical insight into the problem of the gauge-fixing dependence of the quantum effective action.