Infrared Features of the Lattice Landau Gauge QCD

Details Infrared Features of the Lattice Landau Gauge QCD Infrared Features of the Lattice Landau Gauge QCD

2003-09-26

arxiv.org/abs/hep-lat/0309165v2

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 4 figures, proceedings of Lattice2003(topology), revisions in numerical data of ghost and Kugo-Ojima parameter have b

Scientific paper

10.1016/S0920-5632(03)02695-1

The infrared properties of lattice Landau gauge QCD of SU(3) are studied by measuring gluon propagator, ghost propagator, QCD running coupling and Kugo-Ojima parameter of $\beta=6.0, 16^4,24^4,32^4$ and $\beta=6.4, 32^4,48^4$ lattices. We study Gribov copy problem by parallel tempering (PT) gauge fixing of $\beta=2.2, 16^4$ SU(2) configurations. Rather unexpected features of the unique gauge(fundamental modular gauge, FMG) are observed in relation of physical values vs the optimizing function.

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