The IR gluon propagator from lattice QCD

Details The IR gluon propagator from lattice QCD The IR gluon propagator from lattice QCD

2005-09-13

arxiv.org/abs/hep-lat/0509034v1

PoS LAT2005 (2005) 286

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 3 figures. Talk presented at Lattice 2005 (Theoretical Developments), Dublin, July 25-30, 2005

Scientific paper

The gluon propagator is computed in large asymmetric lattices, accessing momenta around 100 MeV and smaller. Our study tries to check the compatibility of the recent solutions of the gluon-ghost Dyson-Schwinger equations with lattice results. In particular the exponent $\kappa$, which characterizes the solutions for the infrared, is measured. Results favours a vanishing zero momentum gluon propagator. We also report on the compatibility of various functional forms used to fit the Dyson-Schwinger solution for the full range of momenta and the lattice gluon propagator.

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