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Register a new userThe lattice gluon propagator in renormalizable $xi$ gauges
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We study the SU(3) gluon propagator in renormalizable $R_xi$ gauges implemented on a symmetric lattice with a total volume of (3.25 fm)$^4$ for values of the guage fixing parameter up to $xi=0.5$. As expected, the longitudinal gluon dressing function stays constant at its tree-level value $xi$. Similar to the Landau gauge, the transverse $R_xi$ gauge gluon propagator saturates at a non-vanishing value in the deep infrared for all values of $xi$ studied. We compare with very recent continuum studies and perform a simple analysis of the found saturation with a dynamically generated effective gluon mass.
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