Two loop effective potential for < A2μ> in the Landau gauge in quantum chromodynamics
R. E. Browne, J. A. Gracey
Abstract
We construct the effective potential for the dimension two composite operator 1/2 Aa 2μin QCD with massless quarks in the Landau gauge for an arbitrary colour group at two loops. For SU(3) we show that an estimate for the effective gluon mass decreases as Nf increases.
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