On the structure of the residual gauge orbit

Details On the structure of the residual gauge orbit On the structure of the residual gauge orbit

2011-11-23

arxiv.org/abs/1111.5457v1

PoS(QCD-TNT-II)028 (2011)

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 6 figures, talk given at the "II International Workshop on QCD Green"s Functions, Confinement and Phenomenology", Tr

Scientific paper

Gauge-fixed correlation functions are a valuable tool in intermediate steps when determining gauge-invariant physics. However, when obtaining them in different calculations, it is necessary to use exactly the same definition of the gauge to ensure comparability. Beyond perturbation theory, this is complicated by the Gribov-Singer ambiguity. In principle, lattice gauge theory can manipulate individual Gribov copies, thus making it an excellent method to deal with the ambiguity. However, to compare to continuum methods this requires to replicate the same treatment outside the lattice, usually in a path integral formulation. Here, the properties of the gauge orbit will be investigated with respect to this question. Especially, the possibility of employing averages over Gribov copies in non-perturbative generalizations of the Landau gauge will be discussed.

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