Interaction model for the gap equation
  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. 
Si-xue Qin, Lei Chang, Yu-xin Liu, Craig D. Roberts and David J.   Wilson
nucl-th hep-lat hep-ph nucl-ex