Magnetic strings in Lattice QCD as Nonabelian Vortices

TL;DR

This paper proposes that nonabelian strings, modeled as D2 branes, explain lattice-observed magnetic strings in QCD, elucidating monopole localization, vacuum energy contributions, and temperature effects.

Contribution

It introduces a nonabelian string pattern as a model for lattice magnetic strings, connecting string theory and QCD vacuum phenomena.

Findings

Nonabelian strings explain monopole-antimonopole localization.

Magnetic strings contribute negatively to vacuum energy.

D2 brane model accounts for temperature dependence of string tension.

Abstract

Lattice studies indicate existence of magnetic strings in QCD vacuum. We argue that recently found nonabelian strings with rich worldsheet dynamics provide a proper pattern for the strings observed on the lattice. In particular, within this pattern we explain the localization of the monopole-antimonopole pairs on the magnetic string worldsheet and the negative contribution of the magnetic strings into the vacuum energy and gluon condensate. We suggest the D2 brane realization of the magnetic string which explains the temperature dependence of its tension.