Dual symmetries of dense isotopically and chirally asymmetric QCD

TL;DR

This paper reveals dual symmetries in dense quark matter phase diagrams, demonstrating their fundamental nature in both NJL models and massless QCD, providing non-perturbative insights into QCD phases.

Contribution

It establishes the existence of dual symmetries at a fundamental level in dense quark matter, extending beyond NJL models to massless QCD without approximations.

Findings

Dual symmetries exist at a fundamental level in dense quark matter.

These symmetries are invariant under dual transformations of fields and chemical potentials.

The symmetries are shown non-perturbatively in QCD.

Abstract

In the present paper, the dual symmetries of dense quark matter phase diagram found in some massless three- and two-color NJL models in the mean field approximation have been shown to exist at a more fundamental level as a dual transformations of fields and chemical potentials leaving the Lagrangian invariant. As a result, the corresponding dual symmetries of the full phase diagram can be shown without any approximation. And it has been shown not only in the NJL models, but also in framework of two- and three-color massless QCD itself. This is quite interesting, since one might say that it is not very common to show something completely non-perturbatively in QCD.