The randomly driven Ising ferromagnet, Part I: General formalism and   mean field theory
  We consider the behavior of an Ising ferromagnet obeying the Glauber dynamics under the influence of a fast switching, random external field. After introducing a general formalism for describing such systems, we consider here the mean-field theory. A novel type of first order phase transition related to spontaneous symmetry breaking and dynamic freezing is found. The non-equilibrium stationary state has a complex structure, which changes as a function of parameters from a singular-continuous distribution with Euclidean or fractal support to an absolutely continuous one. 
J. Hausmann, P. Rujan (FB Physik, Universitaet Oldenburg, Germany)