An update in monopole condensation in two-flavour Adjoint QCD

TL;DR

This paper investigates the deconfinement transition in two-flavour adjoint QCD, demonstrating a sharp first order transition via monopole condensation, with minimal influence from the chiral transition.

Contribution

It provides new insights into monopole condensation as an order parameter for deconfinement in adjoint QCD, highlighting the nature of the transition and its independence from chiral effects.

Findings

Sharp first order deconfinement transition observed

Monopole condensation remains unaffected by chiral transition

Magnetic charge operator effectively signals deconfinement

Abstract

QCD with fermions in the adjoint representation (aQCD) is a model for which a deconfinement and a chiral phase transition take place at different temperatures. In this work, we present a study of the deconfinement transition in the dual superconductor picture based on the evaluation of an operator which carries magnetic charge. The expectation value of this operator signals monopole condensation and is an order parameter for deconfinement as in the case of fermions in the fundamental representation. We find a sharp first order deconfinement transition. We also study the effects of the chiral transition on the monopole order parameter and find them negligible.