文章基本信息

标题：Landau-gauge gluon and ghost propagators in 4D SU(3) gluodynamics on large lattice volumes
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作者：I. Bogolubsky, E.M.,Ilgenfritz ; M. Muller-Preussker ; A. Sternbeck 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2007
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present recent results on the Landau gauge gluon and ghost propagators in SU(3) pure gauge theory at Wilson b = 5.7 for lattice sizes up to 804 corresponding to physical volumes up to (13.2 fm)4. In particular, we focus on finite-volume and Gribov-copy effects. We employ a gauge-fixing method that combines a simulated annealing algorithm with finalizing overrelaxation. We find the gluon propagator for the largest volumes to become flat at q2 ∼ 0.01 GeV2. Although not excluded by our data, there is still no clear indication of a gluon propagator tending towards zero in the zero-momentum limit. New data for the ghost propagator are reported, too.