Infrared Divergent Coulomb Self-Energy in Yang-Mills Theory
  It is shown numerically that the Coulomb self-energy of an isolated, color non-singlet source diverges in an infinite volume. This is in accord with the Gribov Horizon scenario of confinement advocated by Gribov and Zwanziger. It is also shown that this divergence can be attributed to the presence of center vortices in thermalized lattice configurations. 
J. Greensite, S. Olejnik, and D. Zwanziger