Results on the Gluon Propagator in Lattice Covariant Gauges
L. Giusti, M. L. Paciello, S. Petrarca, C. Rebbi, B. Taglienti
TL;DR
This paper presents preliminary lattice QCD results for the gluon propagator in various covariant gauges, comparing different gauge parameters and Landau gauge to understand gauge dependence in the quenched approximation.
Contribution
It introduces a new procedure for fixing generic covariant gauges on the lattice and compares gluon propagator results across different gauges.
Findings
Gluon propagator varies with gauge parameter
Comparison shows differences between covariant gauges and Landau gauge
Preliminary results suggest gauge dependence in the gluon propagator
Abstract
We illustrate preliminary results on the gluon propagator computed in generic covariant lattice gauges in the quenched approximation with the Wilson action. We have applied a recently proposed procedure to fix a generic covariant gauge on the lattice. We make a comparison among results obtained at two different values of the gauge parameter and in the standard Landau's gauge.
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