SU(2) with fundamental fermions and scalars

TL;DR

This paper reports on lattice simulations of an SU(2) gauge theory with fermions and scalars, exploring the phase diagram and effects on meson resonances relevant for models of partial compositeness.

Contribution

It introduces a lattice setup for SU(2) theories with both fermions and scalars and provides initial insights into their phase structure and meson properties.

Findings

Initial phase diagram exploration completed

Scalar fields influence meson resonance properties

Lattice setup for mixed fermion-scalar SU(2) models established

Abstract

We present preliminary results on the lattice simulation of an SU(2) gauge theory with two fermion flavors and one strongly interacting scalar field, all in the fundamental representation of SU(2). The motivation for this study comes from the recent proposal of "fundamental" partial compositeness models featuring strongly interacting scalar fields in addition to fermions. Here we describe the lattice setup for our study of this class of models and a first exploration of the lattice phase diagram. In particular we then investigate how the presence of a strongly coupled scalar field affects the properties of light meson resonances previously obtained for the SU(2) model.