Gauge Theory in d=2+1 at High Temperature: Z_N interface
  We calculate on the lattice the interface tension in the SU(2) pure gauge theory in d=2+1 at high temperature. The result is compared to the perturbative prediction. The agreement confirms applicability of the perturbation theory in this case. 
C. Korthals Altes, A. Michels, M. Stephanov, M. Teper