Chiral transition in a strongly coupled fermion-gauge-scalar model

TL;DR

This paper presents computer simulation results of a fermion-gauge-scalar model demonstrating a chiral transition that joins the Higgs phase transition line, providing insights into chiral symmetry breaking and potential alternatives to the Higgs mechanism.

Contribution

Develops a new scheme for detecting the chiral transition and shows the transition line joins the Higgs transition line with higher precision than previous studies.

Findings

Chiral transition line joins the Higgs phase transition line.

End point of the Higgs transition is suitable for continuum limit studies.

Results improve precision over earlier works.

Abstract

We report the recent results from the computer simulations of a fermion-gauge-scalar model with dynamical chiral-symmetry breaking and chiral transition induced by the scalar field. This model might be considered to be a possible alternative to the Higgs mechanism of mass generation. A new scheme is developed for detecting the chiral transition. Our results show with higher precision than the earlier works that the chiral transition line joins the Higgs phase transition line, separating the Higgs and Nambu (chiral-symmetry breaking) phases. The end point of the Higgs transition with divergent correlation lengths is therefore suitable for an investigation of the continuum limit.