文章基本信息

标题：Lattice Landau gauge gluon propagator: an SU(2) investigation with improved gauge fixing
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作者：M. Muller-Preussker
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：The SU(2) gluon propagator in Landau gauge is studied on the lattice. Our gauge fixing procedure employs simulated annealing and Z(2)-flips. It finds higher maxima of the gauge functional compared with those obtained with the standard overrelaxation and leads to systematic deviations of the gluon propagator in the infrared region. In particular, finite-size effects for lattice sizes from (1.7 fm)4 up to (6.5 fm)4 become weak. The propagator shows a plateau at p ≈ 300 MeV.