Gluon confinement and the two IR solutions
  We examine the two solutions (massive and scaling) for the covariant Yang-Mills Dyson-Schwinger equations within stochastic quantization, and find that the scaling solution does not survive outside Landau gauge.   We also see that the (rainbow) massive solution has less Faddeev-Popov effective action.   Finally, we argue that gluon confinement has only been marginally established in experiment and suggest further empirical work. 
Felipe J. Llanes-Estrada (Univ. Complutense Madrid), Carlos   Hidalgo-Duque (IFIC-Univ. Valencia) and Richard Williams (Univ...
hep-ph nucl-th