Abstract
We present results from simulations of the gauge glass model in
three dimensions using the parallel tempering Monte Carlo technique.
Critical fluctuations should not affect the data since we equilibrate down
to low temperatures, for moderate sizes. Our results
are qualitatively consistent with earlier work on the three and four
dimensional Edwards-Anderson Ising spin glass. We find that large scale
excitations cost only a finite amount of energy in the thermodynamic limit,
and that those excitations have a surface whose fractal dimension is less
than the space dimension, consistent with a scenario proposed by Krzakala and
Martin, and Palassini and Young.