Dynamical gluon mass generation from <A2> in linear covariant gauges
D. Dudal, H. Verschelde, J. A. Gracey, V. E. R. Lemes, M. S. Sarandy, R. F. Sobreiro, S. P. Sorella
Abstract
We construct the multiplicatively renormalizable effective potential for the mass dimension two local composite operator A2 in linear covariant gauges. We show that the formation of <A2> 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.
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