Monopoles and string tension in SU(2) QCD
  Monopole and photon contributions to abelian Wilson loops are calculated using Monte-Carlo simulations of SU(2) QCD in the maximally abelian gauge. The string tension is well reproduced only by monopole contributions, whereas photons alone are responsible for the Coulomb coefficient of the abelian static potential. 
Hiroshi Shiba and Tsuneo Suzuki