Yang-Mills ghost propagator in linear covariant gauges

Abstract

From first principles, using a screened expansion, a simple one-loop analytical expression is provided for the ghost propagator of pure SU(3) Yang-Mills theory in a generic linear covariant gauge. At variance with the Landau gauge, the ghost dressing function is suppressed in the infrared and vanishes at $p=0$, as predicted by other approaches in the continuum. However, in the very limited range where lattice data are available no detectable deviation is found from the Landau gauge, thus reconciling some recent lattice data and previous continuum predictions.

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Cited by in corpus (12)

• Yang-Mills propagators in linear covariant gauges from Nielsen identities
• One-loop RG improvement of the screened massive expansion in the Landau gauge
• Gluon dynamics from an ordinary differential equation
• Thermal extension of the screened massive expansion in the Landau gauge
• The Nielsen identities in screened theories
• Analytic continuation and physical content of the gluon propagator
• Renormalizability of the center-vortex free sector of Yang-Mills theory
• QCD phase diagram from the gluon propagator at finite temperature and density
• Screened massive expansion of Schwinger-Dyson equations
• A window on infrared QCD with small expansion parameters
• One-loop analytic structure of the deep-infrared Landau-gauge gluon propagator at finite temperature
• Screened massive expansion of the quark propagator in the Landau gauge