Abstract
It has been pointed out that the behavior of space-like Wilson loops in non-zero temperature lattice gauge theories cannot be considered as a confinement criterion. In particular they may show area law behavior in the deconfinement phase. We rigorously establish this for sufficiently high temperatures by means of a cluster expansion. For abelian theories correlation inequalities imply a stronger result: space-like Wilson loops in the ( d + 1)-dimensional theory (at coupling g 2 and temperature T) show area law whenever the corresponding d-dimensional 0 temperature theory (with coupling T g 2 is confining. Our results remain valid in the τ-continuum limit.
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