Vector screening masses in the quark-gluon plasma and their physical   significance
  Static and non-static thermal screening states that couple to the conserved vector current are investigated in the high-temperature phase of QCD. Their masses and couplings to the current are determined at weak coupling, as well as using two-flavor lattice QCD simulations. A consistent picture emerges from the comparison, providing evidence that non-static Matsubara modes can indeed be treated perturbatively. We elaborate on the physical significance of the screening masses. 
B.B. Brandt, A. Francis, M. Laine, H.B. Meyer
hep-lat hep-ph