A PERCOLATION EXPLANATION FOR THE PLUS-OR-MINUS J-SPIN-GLASS CRITICAL-TEMPERATURE

We present a simple procedure using invasion percolation for estimating the critical temperatures of the +/-J nearest neighbor spin glass in two, three and four dimensions. The critical temperatures axe found to be 0, 1.35 and 2.0 in the square, cubic and four-dimensional hypercubic lattices, which agrees with standard numerical techniques. We also estimate the critical temperature for the Sherrington-Kirkpatrick +/-J model with an analogous method which is in rough agreement with the exact calculations.