Exploring the phase diagram of sextet QCD

TL;DR

This paper investigates the phase structure of sextet SU(3) gauge theory with symmetric fermions, identifying a phase transition between confined and deconfined phases and exploring the beta-kappa parameter space.

Contribution

It provides new lattice simulation results on the phase diagram of sextet QCD, especially away from the massless limit, and maps the transition line avoiding the infrared fixed point.

Findings

Identified a phase transition from confined to deconfined phase.

Mapped the phase transition line in the beta-kappa plane.

Observed the transition line avoids the infrared fixed point.

Abstract

As a follow up to the previous talk about the beta function of SU(3) gauge theory with Nf=2 symmetric representation (clover) fermions [arXiv:0809.2885 [hep-lat]], we describe our explorations of the beta-kappa plane, away from the massless limit. Our simulations are mostly done on lattices of length L=8 and 12. We observe a phase transition from a strong coupling confined phase to a deconfined, chirally restored phase. The line of transitions avoids (so far) the location of the infrared fixed point discussed in the last talk.