Non-Abelian magnetic monopoles responsible for quark confinement
  We show that the non-Abelian magnetic monopole defined in a gauge-invariant way in SU(3) Yang-Mills theory gives a dominant contribution to confinement of the fundamental quark, in sharp contrast to the SU(2) case. 
K.-I. Kondo, A. Shibata, T. Shinohara and S. Kato
hep-th hep-lat hep-ph