Strong-coupling study of the Gribov ambiguity in lattice Landau gauge

Maas, Axel and Pawlowski, Jan M. and Spielmann, Daniel and Sternbeck, Andre and von Smekal, Lorenz (2010) Strong-coupling study of the Gribov ambiguity in lattice Landau gauge. EUROPEAN PHYSICAL JOURNAL C, 68 (1-2). pp. 183-195. ISSN 1434-6044, 1434-6052

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Abstract

We study the strong-coupling limit beta = 0 of lattice SU(2) Landau gauge Yang-Mills theory. In this limit the lattice spacing is infinite, and thus all momenta in physical units are infinitesimally small. Hence, the infrared behavior can be assessed at sufficiently large lattice momenta. Our results show that at the lattice volumes used here, the Gribov ambiguity has an enormous effect on the ghost propagator in all dimensions. This underlines the severity of the Gribov problem and calls for refined studies also at finite beta. In turn, the gluon propagator only mildly depends on the Gribov ambiguity.

Item Type: Article
Uncontrolled Keywords: YANG-MILLS THEORY; DYSON-SCHWINGER EQUATIONS; INFRARED BEHAVIOR; GLUON PROPAGATOR; GHOST PROPAGATORS; QCD; CONFINEMENT; GLUODYNAMICS; QUANTIZATION; COPIES;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 27 Jul 2020 09:24
Last Modified: 27 Jul 2020 09:24
URI: https://pred.uni-regensburg.de/id/eprint/24497

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