Gluon field distribution between three infinitely spaced quarks
  The gluon field distribution between three infinitely spaced quarks is obtained. The field distribution between every pair is approximated by an infinite flux tube filled with a color longitudinal electric field. The origin of the color electric field is a nonlinear term in the field strength of nonabelian gauge field. Such construction can be considered as a rough model of three quarks in a nucleon. 
Vladimir Dzhunushaliev
hep-ph