The infrared behaviour of the gluon propagator from lattice QCD
D. B. Leinweber, J. I. Skullerud, A. G. Williams
Abstract
The gluon propagator in the Landau gauge is calculated in quenched QCD on a large lattice (323x64) at beta=6.0. In order to assess finite volume and finite lattice spacing artefacts, we also calculate the propagator on a smaller volume for two different values of the lattice spacing. New structure seen in the infrared region survives conservative cuts to the lattice data, and serves to exclude a number of models that have appeared in the literature.
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