Nature of the spin-glass state in the three-dimensional gauge glass - art.no. 104426

We present results from simulations of the gauge-glass model in three dimen sions using the parallel tempering Monte Carlo technique. Critical fluctuat ions should not affect the data since we equilibrate down to low temperatur es, for moderate sizes. Our results are qualitatively consistent with earli er work on the three- and four-dimensional Edwards-Anderson Ising spin glas s. 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 scen ario proposed by Krzakala and Martin, and Palassini and Young.