On chromoelectric (super)conductivity of the Yang-Mills vacuum

TL;DR

This paper proposes that in the QCD vacuum, chromomagnetic flux tubes act as chromoelectric superconductors, with currents induced by topological charge density, offering insights into the nonperturbative structure of the vacuum.

Contribution

It introduces the concept of chromoelectric superconductivity in the QCD vacuum's flux tubes, linking topological charge density to superconducting currents.

Findings

Chromomagnetic flux tubes exhibit chromoelectric superconductivity.

Superconducting currents can be induced by topological charge density.

Supports the 'spaghetti' picture of the QCD vacuum.

Abstract

We argue that in the Copenhagen (``spaghetti'') picture of the QCD vacuum the chromomagnetic flux tubes exhibit chromoelectric superconductivity. We show that the superconducting chromoelectric currents in the tubes may be induced by the topological charge density.