Exploring the infrared gluon and ghost propagators using large asymmetric lattices

Details Exploring the infrared gluon and ghost propagators using large asymmetric lattices Exploring the infrared gluon and ghost propagators using large asymmetric lattices

2006-09-21

arxiv.org/abs/hep-lat/0609036v2

Braz.J.Phys.37:201-207,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 13 figures, proceedings of "Infrared QCD in Rio", Rio de Janeiro, 5-9 June, 2006; minor changes, figure 1 now include

Scientific paper

We report on the infrared limit of the quenched lattice Landau gauge gluon propagator computed from large asymmetric lattices. In particular, the compatibility of the pure power law infrared solution $(q^2)^{2\kappa}$ of the Dyson-Schwinger equations is investigated and the exponent $\kappa$ is measured. The lattice data favours $\kappa \sim 0.52$, which would imply a vanishing zero momentum gluon propagator as predicted by the Kugo-Ojima confinement mechanism and the Zwanziger horizon condition. Results for the ghost propagator and for the running coupling constant are shown.

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