Unquenching the Landau Gauge Lattice Propagators and the Gribov Problem
P. J. Silva, O. Oliveira
TL;DR
This paper investigates the effects of Gribov copies on gluon and ghost propagators in lattice QCD, comparing quenched and dynamical configurations with various quark masses to understand gauge fixing ambiguities.
Contribution
It provides a comparative analysis of Gribov copy effects on propagators across different lattice setups, including quenched and dynamical configurations with Wilson fermions.
Findings
Gribov copies significantly affect propagator measurements
Differences observed between quenched and dynamical configurations
Impact of quark masses on gauge fixing ambiguities
Abstract
The gluon and ghost propagators are computed using both quenched and dynamical configurations for the same lattice spacings. The Wilson fermions are simulated at several quark masses. Furthermore, the effect of the Gribov copies is evaluated for all sets of configurations.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research