Spin Zero Glueballs in the Bethe-Salpeter Formalism

TL;DR

This paper applies the Bethe-Salpeter formalism to study spin zero glueballs, achieving a moderate match with known spectra but highlighting the need for improved models to reduce truncation sensitivity.

Contribution

It extends the Bethe-Salpeter approach to spin zero glueballs, providing a new framework for their theoretical investigation.

Findings

Moderate agreement with glueball spectrum

Sensitivity to model truncations noted

Further refinement needed for accuracy

Abstract

The Schwinger-Dyson Bethe-Salpeter approach to the bound state problem is applied to the spin zero glueball spectrum. Although a moderately successful description of the two point functions and the glueball spectrum can be obtained, further work is required to reduce sensitivity to model truncations.