Quarks and gluons in dense two-colour QCD

TL;DR

This paper investigates the behavior of quark and gluon propagators in dense two-color QCD at high baryon chemical potential, revealing antiscreening and screening effects for gluons and significant modifications in quark propagators due to superfluid gap formation.

Contribution

It provides the first detailed analysis of quark and gluon propagators in dense two-color QCD at large chemical potential, highlighting the effects of superfluidity.

Findings

Gluon propagator is antiscreened at intermediate mu and screened at large mu.

Quark propagator is significantly altered in the superfluid phase.

Superfluid gap formation strongly impacts quark propagator behavior.

Abstract

We compute quark and gluon propagators in 2-colour QCD at large baryon chemical potential mu. The gluon propagator is found to be antiscreened at intermediate mu and screened at large mu. The quark propagator is drastically modified in the superfluid region as a result of the formation of a superfluid gap.