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Numerical studies of confinement in the Landau gauge by the larger lattice simulation

✍ Scribed by Hideo Nakajima; Sadataka Furui

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
236 KB
Volume
119
Category
Article
ISSN
0920-5632

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✦ Synopsis

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 suppression of the singularity of the gluon propagator and enhancement of the ghost propagator but the shifts are smaller than those of Dyson-Schwinger approach. The momentum dependence of the running coupling in the infrared region is weak and (~~(0) N 1.

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