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Studying the infrared region in Landau gauge QCD

By Andre Sternbeck, Ernst-Michael Ilgenfritz, Michael Muller-Preussker and A. Schiller

Abstract

Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.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

Publisher: Scuola Internazionale Superiore di Studi Avanzati
Year: 2005
OAI identifier: oai:digital.library.adelaide.edu.au:2440/37102
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