Charged fermion states in the quenched U(1) chiral Wilson-Yukawa model

TL;DR

This study investigates the existence of charged fermion states in a quenched U(1) chiral Wilson-Yukawa model, finding no evidence of such states as asymptotic particles through lattice simulations and theoretical expansion.

Contribution

The paper provides the first detailed analysis of charged fermion states in this model, demonstrating the absence of asymptotic charged fermions using large coupling expansion and lattice data.

Findings

Charged fermion propagator fitting is unreliable with a single hyperbolic cosine.

Large Wilson-Yukawa coupling expansion describes the propagator behavior well.

No charged fermion state exists as an asymptotic particle in the model.

Abstract

Property of charged fermion states is investigated in the quenched U(1) chiral Wilson-Yukawa model. Fitting the charged fermion propagator with a single hyperbolic cosine does not yield reliable results. On the other hand the behavior of the propagator including large lattice size dependence is well described by the large Wilson-Yukawa coupling expansion, providing strong evidence that no charged fermion state exists as an asymptotic particle in this model.