Infrared Features of the Lattice Landau Gauge QCD
Hideo Nakajima, Sadataka Furui
Abstract
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 β=6.0, 164,244,324 and β=6.4, 324,484 lattices. We study Gribov copy problem by parallel tempering (PT) gauge fixing of β=2.2, 164 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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