Nonperturbative QCD Vacuum Effects in Nonlocal Quark Dynamics
K. Williams
Abstract
A straightforward calculation reveals the essentially nonlocal character of the leading heavy QQ interaction arising from nonperturbative gluon field correlations in the model of a fluctuating QCD vacuum. In light of this quarkonium spin splitting ratio predictions which have supported the scalar confinement ansatz are reconsidered as a specific example of possible consequences for spectroscopy.
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