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Abstract
We study the gauge glass model for the vortex glass transition in type--II
superconductors, including
screening of the interaction between vortices. From the size dependence
of the domain wall energy
we find that, in two--dimensions,
the transition is at $T=0$ both with and without screening but the
exponents are different in the two cases. In three-dimensions,
we find that screening destroys the
finite temperature transition found earlier when screening was
neglected.
Figures available on request from peter@mozart.ucsc.edu
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