Off-diagonal mass generation for Yang-Mills theories in the maximal Abelian gauge

AUTOR(ES)

Dudal, D., Gracey, J.A., Lemes, V.E.R., Sarandy, M.S., Sobreiro, R.F., Sorella, S.P., Verschelde, H.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2007-06

RESUMO

We investigate a dynamical mass generation mechanism for the off-diagonal gluons and ghosts in SU(N) Yang-Mills theories, quantized in the maximal Abelian gauge. Such a mass can be seen as evidence for the Abelian dominance in that gauge. It originates from the condensation of a mixed gluon-ghost operator of mass dimension two, which lowers the vacuum energy. We construct an effective potential for this operator by a combined use of the local composite operators technique with algebraic renormalization and we discuss the gauge parameter independence of the results. We also show that it is possible to connect the vacuum energy, due to the mass dimension two condensate discussed here, with the non-trivial vacuum energy originating from the condensate áAµ²ñ, which has attracted much attention in the Landau gauge.

Documentos Relacionados

• Aspectos não perturbativos das teorias de Yang-Mills no calibre abeliano maximal
• Remarks on the dynamical mass generation in confining Yang-Mills theories
• The infrared behavior of the gluon and ghost propagators in SU(2) Yang-Mills theory in the maximal abelian gauge
• Elliptic Yang–Mills equation
• Stability and gap phenomena for Yang-Mills fields