SU($2$) string tension in the continuum limit using an effective theory of center vortices

Abstract

Using an effective theory for an ensemble of center vortices, we observe the area law fall-off in the continuum limit for the SU($2$) gauge group in three-dimensional Euclidean space-time. The string tension is obtained in terms of the intrinsic properties of the vortices and a parameter which describes their interactions. In addition, fitting our analytical results on lattice data, we show that the repulsive force between the vortices increases with temperature. This behavior is expected due to the reduction of vortex configuration at higher temperatures, required for the deconfinement regime.