Insights into the Quark-Gluon Vertex from Lattice QCD and Meson Spectroscopy
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By comparing successful quark-gluon vertex interaction models with the corresponding interaction extracted from lattice-QCD data on the quark's propagator, we identify common qualitative features which could be important to tune future interaction models beyond the rainbow ladder approximation. Clearly, a quantitative comparison is conceptually not simple, but qualitatively the results suggest that a realistic interaction should be relatively broad with a strong support at about 0.4-0.6 GeV and infrared-finite.
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Few-body Systems. Wien: Springer Wien, v. 56, n. 6-9, p. 639-644, 2015.
