|S =||L(t,t') dt = ∑i=1,N (xi+1 - xi )2/a + a xi2,|
Java Virtual Matchine compiles "on-fly" simple applications, therefore e.g. the Mandelbrot set applet is only 25% slower than the corresponding C program (results may depend on chips and JVMs). The PIMC applet above makes every "Step" 106 MC iterations for T=0.65 sec on Athlon1500+ and IE6 (you can see your time in the Status bar).
 M.Creutz, B.A.Freedman "A statistical approach to
Annals of Physics 1981, 132, 427
 Richard MacKenzie "Path Integral Methods and Applications" arXiv:quant-ph/0004090
 Tilman Sauer "The Feynman Path Goes Monte Carlo" arXiv:physics/0107010