Asymptotic Scaling, Casimir Scaling, and Center Vortices
  We report on two recent developments in the center vortex theory of confinement: (i) the asymptotic scaling of the vortex density, as measured in Monte Carlo simulations; and (ii) an explanation of Casimir scaling and the adjoint string tension, in terms of the center vortex mechanism. 
M. Faber, J. Greensite, and S. Olejnik