Propagators in Yang-Mills theory for different gauges
Axel Maas, Attilio Cucchieri, Tereza Mendes
TL;DR
This paper investigates how gluon and ghost propagators behave in different gauges, specifically the lambda-gauge interpolating between Landau and Coulomb gauges, using lattice gauge theory to understand gauge dependence in confinement signals.
Contribution
It provides the first lattice study of propagators in the lambda-gauge, bridging the understanding between Landau and Coulomb gauges and comparing results with the minimal Landau gauge.
Findings
Propagators vary smoothly between Landau and Coulomb gauges.
Gauge dependence significantly affects the interpretation of confinement signals.
Results offer insights into gauge choices in non-perturbative QCD studies.
Abstract
Green's functions are gauge-dependent quantities. Thus, the manifestation of confinement in these correlation functions also depends on the gauge. Here we use lattice gauge theory to study the gluon and the ghost propagators in a gauge (the so-called lambda-gauge) interpolating between the Landau and the Coulomb gauge. Results are compared to the usual minimal Landau gauge.
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