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Название: Fluctuations in the Curie-Weiss Version of the Random Field Ising Model
Авторы: Amaro de Matos J.M.G., Perez J.F.
The fluctuations of the order parameter in the Curie-Weiss version of the Ising model with random magnetic field are computed. Away from criticality or at first-order critical points they have a Gaussian distribution with random (i.e., sample-dependent ) mean, thermal fluctuations contributing in same order as the fluctuations of the field; at second- or higher-order critical points, non-Gaussian sample-dependent distributions appear, and the fluctuations of the fields are enhanced, dominating over the thermal ones.