Nonequilibrium phase transition in the kinetic Ising model: Violation of Fluctuation-Dissipation relation

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  • 24 January 1997
Abstract
The nonequilibrium dynamic phase transition, in the kinetic Ising model in presence of an oscillating magnetic field, has been studied by Monte Carlo simulation. The fluctuation of dynamic order parameter has been studied as a function of temperature near the dynamic transition point. The temperature variation of appropriately defined `susceptibility' has also been studied near the dynamic transition point. Similarly, fluctu- ation of energy and appropriately defined `specific-heat' have been studied as a function of temperature near the dynamic transition point. In both the cases, the fluctuations (of dynamic order parameter and energy) and the corresponding thermodynamic quantities diverge (as power law fashion) near the dynamic transition point with significantly different (with different exponent values) singular manner.

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