The Laplacian Gauge Gluon Propagator in SU(N_c)

Abstract

We examine the gluon propagator in the Laplacian gauge in quenched lattice QCD as a function of the number of colours. We observe a weak dependence on $N_c$ over the whole momentum range. This implies an almost $N_c$-independent gluon pole mass in units of the string tension.

arXiv comment5 pages, 7 figures. A study of the gluon propagator in SU(4) for various lattice sizes was added. Extended version to appear in Phys. Rev. D

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• Dynamical gluon mass generation from <A^2> in linear covariant gauges
• Large volume behaviour of Yang-Mills propagators
• Renormalizability of the local composite operator A^2 in linear covariant gauges
• Quark propagator in Landau and Laplacian gauges with overlap fermions
• Infrared finite ghost propagator in the Feynman gauge
• Gribov horizon in the presence of dynamical mass generation in Euclidean Yang-Mills theories in the Landau gauge
• Modified iterative versus Laplacian Landau gauge in compact U(1) theory
• Lattice QCD, gauge fixing, and the transition to the perturbative regime