Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-26
Nucl.Phys.Proc.Suppl.141:128-133,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 6 figures, Summary of a talk given at the international conference QCD DOWN UNDER, March 10 - 19, Adelaide, Australia
Scientific paper
10.1016/j.nuclphysbps.2004.12.02
We summarise results on the infrared behaviour of Landau gauge QCD from the Green's functions approach and lattice calculations. Approximate, nonperturbative solutions for the ghost, gluon and quark propagators as well as first results for the quark-gluon vertex from a coupled set of Dyson-Schwinger equations are compared to quenched and unquenched lattice results. Almost quantitative agreement is found for all three propagators. Similar effects of unquenching are found in both approaches. The dynamically generated quark masses are close to `phenomenological' values. First results for the quark-gluon vertex indicate a complex tensor structure of the non-perturbative quark-gluon interaction.
Alkofer Reinhard
Fischer Christian S.
Llanes-Estrada Felipe
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