%0 Journal Article %T The interaction between center monopoles in SU(2) Yang-Mills %A Ph. de Forcrand %A M. D'Elia %A M. Pepe %J Physics %D 2000 %I arXiv %R 10.1016/S0920-5632(01)00890-8 %X We study the potential between a static center monopole and antimonopole in 4d SU(2) Yang-Mills theory. Using a new numerical method, we show that the 't Hooft loop is a dual order parameter with respect to the Wilson loop, for the deconfinement phase transition. We observe a 3d Ising-like critical behaviour for the dual string tension related to the spatial 't Hooft loop as a function of the temperature. %U http://arxiv.org/abs/hep-lat/0010072v1