Color symmetric superconductivity in a phenomenological QCD model

TL;DR

This paper develops a phenomenological NJL-type model demonstrating that color superconductivity can coexist with color symmetry, maintaining the overall color singlet nature of the deconfined phase in QCD.

Contribution

It introduces a novel approach to color superconductivity that preserves color symmetry, aligning with the color singlet property of the deconfined phase in QCD.

Findings

Color symmetric superconducting state constructed

Model consistent with color singlet-ness

Superconducting state remains invariant under color rotations

Abstract

In this paper, we construct a theory of the NJL-type where superconductivity is present, and yet the super-conducting state remains, in the average, color symmetric. This shows that the present approach to color superconductivity is consistent with color singlet-ness. Indeed, quarks are free in the deconfined phase, but the deconfined phase itself is believed to be a color singlet. The usual description of the color superconducting state violates color singlet-ness. On the other hand, the color superconducting state here proposed, is color symmetric in the sense that an arbitrary color rotation leads to an equivalent state, with precisely the same physical properties.