We study the volume dependence of electric flux energies for SU(2) gauge
theory with twisted boundary conditions. The curves interpolate smoothly
between the perturbative semiclassicalresults and the Confinement regime. On
the basis of our results, we propose that the Confinement property might be
caused by a class of non-dilute multi-instanton configurations.Comment: Postscript - paper.ps and sig_lt3c.eps (Fig 1). 25 pages of text and
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