It is computationally expensive to find evaluate a exponential, yet we must know the value of e −β∆E . However, usually there are only a few possible values of ∆E. (For example in the square lattice I...It is computationally expensive to find evaluate a exponential, yet we must know the value of e −β∆E . However, usually there are only a few possible values of ∆E. (For example in the square lattice Ising model with nearest neighbor interactions and a field, a single spin flip gives rise to one of only ten possible values of the energy change.) It saves considerable computational time (and often makes the program clearer) to precalculate the corresponding values of w a→b just once at the beginn…
