Topological density fluctuations and gluon condensate around confining string in Yang-Mills theory

TL;DR

This paper investigates the structure of the confining string in Yang-Mills theory, showing that topological charge fluctuations and gluon condensate are suppressed near the string, aligning with lattice simulation results.

Contribution

It demonstrates the suppression of topological charge and gluon condensate around the confining string using the field strength correlator method, providing new insights into the string's internal structure.

Findings

Suppression of topological charge fluctuations near the string axis

Suppression of gluon condensate in the vicinity of the string

Agreement with lattice simulation results

Abstract

We study the structure of the confining string in Yang-Mills theory using the method of the field strength correlators. The method allows us to demonstrate that both the local fluctuations of the topological charge and the gluon condensate are suppressed in the vicinity of the string axis in agreement with results of lattice simulations.