Is demagnetization an efficient optimization method?
arXiv:cond-mat/0507297 · doi:10.1016/j.jmmm.2003.12.627
Abstract
Demagnetization, commonly employed to study ferromagnets, has been proposed as the basis for an optimization tool, a method to find the ground state of a disordered system. Here we present a detailed comparison between the ground state and the demagnetized state in the random field Ising model, combing exact results in and numerical solutions in . We show that there are important differences between the two states that persist in the thermodynamic limit and thus conclude that AC demagnetization is not an efficient optimization method.
2 pages, 1 figure