Gauge-Dependence of Green's Functions in QCD and QED

Details Gauge-Dependence of Green's Functions in QCD and QED Gauge-Dependence of Green's Functions in QCD and QED

2007-10-05

arxiv.org/abs/0710.1257v2

Eur.Phys.J.C53:649-657,2008

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, 4 figures

Scientific paper

10.1140/epjc/s10052-007-0486-1

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 $\alpha$. We shall discuss the physical significance of this conclusion.

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