Propagators in Yang-Mills theory for different gauges

Abstract

Green's functions are gauge-dependent quantities. Thus, the manifestation of confinement in these correlation functions also depends on the gauge. Here we use lattice gauge theory to study the gluon and the ghost propagators in a gauge (the so-called lambda-gauge) interpolating between the Landau and the Coulomb gauge. Results are compared to the usual minimal Landau gauge.

3 pages, 2 figures, talk presented by AM at the conference "Quark Confinement and the Hadron Spectrum VII", Ponta Delgada, Portugal, 2nd-7th of September 2006; submitted to the proceedings