Alternative refined Gribov-Zwanziger Lagrangian

摘要

We consider the implications of the condensation of a general local BRSTinvariant dimension two operator built out of the localizing ghost fields ofthe Gribov-Zwanziger Lagrangian which is a localized Lagrangian incorporatingthe Gribov problem in the Landau gauge. For different colour tensor projectionsof the general operator, the properties of a frozen gluon propagator andunenhanced Faddeev-Popov ghost propagator, which are observed in latticecomputations, can be reproduced. The alternative possibilities aredistinguished by the infrared structure of the propagators of the spin-1fields, other than those of the gluon and Faddeev-Popov ghost, for which thereis no numerical simulation data to compare with yet.