Gauge field topology and the hadron spectrum

TL;DR

This paper discusses the role of topologically non-trivial gauge configurations in non-abelian gauge theories and their impact on the hadron spectrum, especially regarding chiral anomalies and CP violation.

Contribution

It highlights the significance of gauge field topology in understanding the hadron spectrum and related phenomena in quantum chromodynamics.

Findings

Topological configurations influence the pseudo-scalar spectrum.

Gauge topology is linked to chiral anomalies.

Implications for CP violation in strong interactions.

Abstract

Topologically non-trivial gauge field configurations are an interesting aspect of non-abelian gauge theories. These become particularly important upon quantizing the theory, especially through their effect on the pseudo-scalar spectrum. These effects are closely tied to chiral anomalies and the possibility of CP violation in the strong interactions.