Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-09-03
J.Phys.A36:8507-8516,2003
Physics
High Energy Physics
High Energy Physics - Theory
7 pages; uses revtex4
Scientific paper
10.1088/0305-4470/36/31/312
Recent work claimed that the off-diagonal gluons (and ghosts) in pure Yang-Mills theories, with Maximal Abelian gauge fixing (MAG), attain a dynamical mass through an off-diagonal ghost condensate. This condensation takes place due to a quartic ghost interaction, unavoidably present in MAG for renormalizability purposes. The off-diagonal mass can be seen as evidence for Abelian dominance. We discuss why ghost condensation of the type discussed in those works cannot be the reason for the off-diagonal mass and Abelian dominance, since it results in a tachyonic mass. We also point out what the full mechanism behind the generation of a real mass might look like.
Dudal David
Verschelde Henri
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