SO(3) Yang-Mills theory on the lattice
  We numerically investigate the phase structure of pure SO(3) LGT at zero and non-zero temperature in the presence of a Z2 blind monopole chemical potential. The physical meaning of the different phases, a possible symmetry breaking mechanism as well as the existence of an order parameter for the finite temperature phase transition are discussed. 
A. Barresi, G. Burgio, M. Muller-Preussker