Gauge-fixed Lattice QCD and the dispersion relation of Wilson fermions

Gauge-fixed Lattice QCD and the dispersion relation of Wilson fermions

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We show that, when investigating Wilson-fermions correlation functions on the lattice, one is bound Print Books to encounter major difficulties in defining their dispersion relation, even at tree level.The problem is indeed quite general and, although we stumbled upon it while studying Coulomb-gauge applications, it also affects gauge fixed studies in covariant gauges, including their most popular version, Landau gauge.In Oven Roasting Rack this paper we will discuss a solution to this problems based on a redefinition of the kinematic momentum of the fermion.