A new method Simulated Tempering by Marinari ( Rome, Syracuse) and Parisi (Rome) |
Conventional Monte Carlo methods do not work well for Random Field Ising Model = RFIM |
Spins si live on 3D lattice |
si = +/-1 to be determined |
Fixed Magnetic Field |
hi = |h| ri |
|h| = 1 |
ri = +/- 1 with random probability 1/2 |