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arXiv · 1412.4782

Bridging a gap between continuum-QCD and ab initio predictions of hadron observables

Daniele Binosi·Lei Chang·Joannis Papavassiliou·Craig D. Roberts
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Abstract

Within contemporary hadron physics there are two common methods for determining the momentum-dependence of the interaction between quarks: the top-down approach, which works toward an ab initio computation of the interaction via direct analysis of the gauge-sector gap equations; and the bottom-up scheme, which aims to infer the interaction by fitting data within a well-defined truncation of those equations in the matter sector that are relevant to bound-state properties. We unite these two approaches by demonstrating that the renormalisation-group-invariant running-interaction predicted by contemporary analyses of QCD's gauge sector coincides with that required in order to describe ground-state hadron observables using a nonperturbative truncation of QCD's Dyson-Schwinger equations in the matter sector. This bridges a gap that had lain between nonperturbative continuum-QCD and the ab initio prediction of bound-state properties.

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Daniele Binosi, Lei Chang, Joannis Papavassiliou, Craig D. Roberts. 2014-12-15. Bridging a gap between continuum-QCD and ab initio predictions of hadron observables. https://doi.org/10.1016/j.physletb.2015.01.031

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