't Hooft Loop in SU(2) Yang-Mills Theory

Abstract
We study the behavior of the spatial and temporal 't Hooft loop at zero and finite temperature in the 4D SU(2) Yang-Mills theory, using a new numerical method. In the deconfined phase T>Tc, the spatial 't Hooft loop exhibits a dual string tension, which vanishes at Tc with a 3D Ising-like critical exponent.