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Infrared Features of Unquenched Lattice Landau Gauge QCD

โœ Scribed by S. Furui; H. Nakajima


Publisher
Springer Vienna
Year
2006
Tongue
English
Weight
403 KB
Volume
40
Category
Article
ISSN
0177-7963

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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 /3 = 6.0, 164, 244, 324 and p = 6.4, 324, 484 lattices. We study Gribov copy problem by parallel tempering (PT) gauge fixing of p

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The infrared behaviour of QCD in the Landau gauge is studied in 244 and 324 lattices by measuring the Kugo-Ojima parameter, gluon propagator, ghost propagator and the QCD running coupling. The Kugo-Ojima parameter c remains about 0.8 instead of the expectation value 1. We observe infrared suppressio