Lorentz gauge fixing and the Gribov problem: the fermion correlator in lattice compact QED with Wilson fermions
I. L. Bogolubsky, V. K. Mitrjushkin, M. Müller-Preussker, P. Peter, N. V. Zverev
Abstract
For the Lorentz gauge the influence of Gribov copies on the fermion propagator is investigated in quenched lattice compact QED. In the Coulomb phase zero-momentum modes of the gauge fields are shown to be the main reason for a significant deviation from ordinary perturbation theory.
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