The Gluon Chain Model Revisited
  I describe how the gluon chain model of QCD string formation meets a number of criteria which are required of any theory of the confining force, including: the correct center dependence and (at large-N) Casimir scaling of the string tension, the logarithmic broadening of the QCD flux tube, and the existence of a Luscher term in the static quark potential. 
J. Greensite