Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-06-15
Phys.Rev. D70 (2004) 114038
Physics
High Energy Physics
High Energy Physics - Theory
24 pages, 2 .eps figures. v2: version accepted for publication in Phys.Rev.D
Scientific paper
10.1103/PhysRevD.70.114038
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 the 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
Dudal David
Gracey J. A.
Lemes V. E. R.
Sarandy Marcelo S.
Sobreiro R. F.
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