Branes And The Dynamics Of QCD

TL;DR

This paper explores a brane configuration model that sheds light on the non-perturbative dynamics of N=1 supersymmetric Yang-Mills theory, including confinement, chiral symmetry breaking, and domain walls.

Contribution

It introduces a semiclassical brane model that captures key non-perturbative phenomena of supersymmetric Yang-Mills theory within the same universality class.

Findings

Confinement and chiral symmetry breaking are explained via brane topology.

Domain walls can separate different vacua and allow QCD strings to end.

The model aligns with the universality class of supersymmetric Yang-Mills theory.

Abstract

A brane configuration is described that is relevant to understanding the dynamics of N=1 supersymmetric Yang-Mills theory. Confinement and spontaneous breaking of a discrete chiral symmetry can be understood as consequences of the topology of the brane. Because of the symmetry breaking, there can be domain walls separating different vacua; the QCD string can end on such a domain wall. The model in which these properties can be understood semiclassically does not coincide with supersymmetric Yang-Mills theory but is evidently in the same universality class.