On gauge fixing

Details On gauge fixing On gauge fixing

2010-10-27

arxiv.org/abs/1010.5718v1

PoS Lattice2010:279,2010

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, talk given at the "XXVIII International Symposium on Lattice Field Theory", Villasimius, Italy, June 2010. Submitted

Scientific paper

Gauge fixing is a useful tool to simplify calculations. It is also valuable to combine different methods, in particular lattice and continuum methods. However, beyond perturbation theory the Gribov-Singer ambiguity requires further gauge conditions for a well-defined gauge-fixing prescription. Different additional conditions can, in principle, lead to different results for gauge-dependent correlation functions, as will be discussed for the example of Landau gauge. Also the relation of lattice and continuum gauge fixing beyond perturbation theory will be briefly outlined.

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