Spectrum of SU(2) gauge theory with two fermions in the adjoint representation

TL;DR

This paper reports preliminary lattice simulation results of SU(2) gauge theory with two adjoint fermions, exploring its particle spectrum and potential infrared fixed point, relevant for walking technicolor models.

Contribution

It provides the first lattice spectrum analysis of SU(2) with adjoint fermions, comparing it to fundamental fermion theories to identify unique features.

Findings

Indications of near-conformal behavior in the spectrum

Differences between adjoint and fundamental fermion spectra

Preliminary evidence supporting the existence of an infrared fixed point

Abstract

We present preliminary results of lattice simulations of SU(2) gauge theory with two Wilson fermions in the adjoint representation. This theory has recently attracted considerable attention because it might possess an infrared fixed point (or an almost-fixed-point), and hence be a candidate for a walking technicolor theory. In this work we study the particle spectrum of the theory, and compare it with more familiar spectrum of the theory with SU(2) gauge fields and two flavors of fundamental representation fermions.