Fermionic correlators and zero-momentum modes in quenched lattice QED

Abstract

For the Lorentz gauge the influence of various Gribov gauge copies on the fermion propagator is investigated in quenched compact lattice QED. Within the Coulomb phase besides double Dirac sheets the zero-momentum modes of the gauge fields are shown to cause the propagator to deviate strongly from the perturbatively expected behaviour. The standard way to extract the fermion mass fails. The recently proposed zero-momentum Lorentz gauge is demonstrated to cure the problem.

14 pages and 5 Postscript figures

References in corpus (2)

• Lorentz gauge and Gribov ambiguity in the compact lattice U(1) theory
• Gribov copies and gauge variant correlators in U(1) lattice gauge theory

Cited by in corpus (4)

• Landau gauge gluon and ghost propagators at finite temperature from quenched lattice QCD
• Infrared behavior and Gribov ambiguity in SU(2) lattice gauge theory
• Riemann $\zeta (3)$- terms in perturbative QED series, conformal symmetry and the analogies with structures of multiloop effects in N=4 supersymmetric Yang-Mills theory
• Zero-momentum modes and chiral limit in compact lattice QED