Tricritical point in strongly coupled U(1) gauge theory with fermions and scalars

TL;DR

This paper explores the tricritical point in a lattice U(1) gauge theory with fermions and scalars, revealing critical scaling behaviors that suggest a potential continuum limit at this special point.

Contribution

It identifies and analyzes the tricritical point in a lattice U(1) gauge theory with fermions and scalars, highlighting its significance for continuum limit considerations.

Findings

Scaling behavior of chiral condensate observed

Masses of composite fermion and scalar analyzed

Indication of a continuum limit at the tricritical point

Abstract

We investigate the tricritical point in the lattice fermion--gauge--scalar model with U(1) gauge symmetry. In the vicinity of this point, in the phase with the broken chiral symmetry, we observe the scaling behavior of the chiral condensate and of the masses of composite fermion and composite scalar, indicating the existence of an interesting continuum limit of the model at this point.