The Role of the QCD Vacuum in the Heavy-Quark Bound State Dynamics

TL;DR

This paper explores how the QCD vacuum influences heavy-quark bound states using effective field theory to separate high and low energy effects, emphasizing non-perturbative contributions to the spectrum.

Contribution

It provides a detailed analysis of non-perturbative effects in heavy-quarkonium spectra within an effective field theory framework, clarifying their nature and current understanding.

Findings

Identification of non-perturbative effects in heavy-quarkonium spectrum

Use of effective field theory to disentangle energy effects

Insights into the QCD vacuum's role in bound state dynamics

Abstract

The effective field theory approach allows a rigorous disentangling of high and low energy effects in the heavy quarkonium dynamics. Focusing in particular on the spectrum, we describe the nature of the non-perturbative effects and discuss our present knowledge of them.