Gluon propagator in the Landau gauge fixed lattice QCD simulation
Sep, 19984 pages
Part of Quark confinement and the hadron spectrum III. Proceedings, 3rd International Conference, Newport News, USA, June 7-12, 1998, 191-194
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Abstract:
We measured the gluon propagator in the Landau gauge fixed QCD Langevin simulation and studied the infra-red behaviour of the gluon propagator. The 4^3 x 8 lattice simulation was done for quenched and unquenched using each 100 independent samples. The Landau gauge fixing was done by an extension of the Fourier acceleration method with the condition Max|div A|<10^{-4}, and the field A is related to the link variable by U=exp A instead of the usual U-linear definition. We confirmed gauge fixing with smearing preconditioning works perfectly for the purpose of finding the global minimum of the squared norm of the gauge field when is large(e.g. ). Our simulation results suggests the possibility of a realization of the infrared behaviour of the Gribov-Zwanziger theory.- talk: Newport News 1998/06/07
- fermion: lattice field theory
- gauge field theory: SU(3)
- gluon: propagator
- Landau gauge
- infrared problem
- approximation: quenching
- numerical calculations: Monte Carlo
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