Efficient search of critical points in Ising-like systems

We propose a simulation method inspired by self-organization that drives Is ing-like magnetic systems rapidly to criticality. We develop a feedback con trol rule with very few parameters for use with the standard methods of loc al spin updatings that spontaneously leads the system to the critical tempe rature. This method for predicting the critical values requires small latti ces. It gives good results eg., 1% accuracy for T-C in 3-D for 10(3) system s, with reduced computer times, for both Glauber and Metropolis dynamics. ( C) 1999 Elsevier Science B.V. All rights reserved.