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Dynamical gluon mass generation from in linear covariant gauges

We construct the multiplicatively renormalizable effective potential for the mass dimension two local composite operator AμaAμa in linear covariant gauges. We show that the formation of AμaAμa is energetically favoured and that the gluons acquire a dynamical mass due to this gluon condensate. We also discuss the gauge parameter independence of the resultant vacuum energy.