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.

References in corpus (6)

• Infrared propagators of Yang-Mills theory from perturbation theory
• Covariant gauge on the lattice: a new implementation
• Yang-Mills two-point functions in linear covariant gauges
• On gluon and ghost propagators in linear covariant gauges
• The gluon propagator in Feynman gauge by the method of stationary variance
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Cited by in corpus (4)

• Yang-Mills propagators in linear covariant gauges from Nielsen identities
• Thermal extension of the screened massive expansion in the Landau gauge
• The Nielsen identities in screened theories
• Screened massive expansion of the quark propagator in the Landau gauge