This applet demonstrates three algorithms on the Ising model:
Metropolis's method, Swendsen and Wang's algorithm, and Wolff's
algorithm. Metropolis's algorithm is called single spin flip
algorithm. SW and Wolff's algorithm is called cluster algorithm.
Cluster algorithm can dramatically reduce the effects of critical
slowing down and have been applied for many models.
Center panel is a lattice, its size is 32x32. Spin's color are red and white. Black lines in center panel is boundary of cluster. Right pole is temparature meter, its unit is Tc=2/ln(1+sqrt 2). You can change temparature, when you push mouse button in meter.
Button: "Change" --- Change algorithm. "Run" --- Auto mode ON. "Stop" --- Auto mode OFF. "Step" --- Go one step.