Studying the infrared region in Landau gauge QCD

Details Studying the infrared region in Landau gauge QCD Studying the infrared region in Landau gauge QCD

2005-09-22

arxiv.org/abs/hep-lat/0509090v1

PoS LAT2005:333,2006

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 4 figures, talk presented at Lattice 2005 (Topology and Confinement)

Scientific paper

We report on the progress we made in studying the infrared behavior of the ghost and gluon dressing functions in Landau gauge. Related to this we also investigate a running coupling given in terms of those functions and compare our results to those coming from the Dyson-Schwinger approach. We present first numerical results for the SU(3) ghost-ghost-gluon vertex renormalization constant. In addition the spectrum of low-lying eigenvalues and eigenfunctions of the Faddeev-Popov operator is determined. The saturation of the ghost propagator in terms of those eigenvalues and eigenmodes is discussed at lower momenta.

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