Functional approaches to infrared Yang-Mills theory in the Coulomb gauge
  We present the current status of ongoing efforts to use functional methods, Dyson-Schwinger equations and functional renormalization group equations, for the description of the infrared regime of nonabelian (pure) gauge theories in the Coulomb gauge. In particular, we present a new determination of the color-Coulomb potential with the help of the functional renormalization group that results in an almost linearly rising potential between static color charges at large spatial distances. 
A. Weber, M. Leder, J. M. Pawlowski and H. Reinhardt
hep-th