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Название: Nonlinearity in cooperative systems-dynamical Bethe-Ising model
Авторы: Yukio Saito, Ryogo Kubo
The dynamics of the short-range order as well as the long-range order in the nonlinear cooperative system is investigated specifically for a kinetic Ising model in the Bethe approximation. The phenomena of critical slowing down near the transition temperatureT c and anomalous fluctuation belowT c are directly related to the instability of the long-range order. The dynamics of the short-range order is essentially a fast mode and is noncritical. However, through the nonlinear coupling the short-range order is also influenced by the critical behavior of the long-range order.