Interaction model for the gap equation

Si-xue Qin, Lei Chang, Yu-xin Liu, Craig D. Roberts, David J. Wilson

Published 2011-08-02, updated 2011-09-01Version 2

We explain a form for the rainbow-ladder kernel whose momentum-dependence is consonant with modern DSE- and lattice-QCD results, and assess its capability as a tool in hadron physics. In every respect tested, this form produces results for observables that are at least equal to the best otherwise obtained in a comparable approach. Moreover, it enables the natural extraction of a monotonic running-coupling and -gluon-mass.