Gauge-Dependence of Green's Functions in QCD and QED
arXiv:0710.1257 · doi:10.1140/epjc/s10052-007-0486-1
Abstract
When all Green's functions are known in a given gauge we may raise a question of whether it is possible or not to derive the corresponding ones in a different gauge. The answer is negative in QCD but affirmative in QED provided that we confine ourselves to the covariant gauge characterized by a gauge parameter $α$. We shall discuss the physical significance of this conclusion.
20 pages, 4 figures