Critical Slowing Down Along the Dynamic Phase Boundary in Ising Meanfield Dynamics

Details Critical Slowing Down Along the Dynamic Phase Boundary in Ising Meanfield Dynamics Critical Slowing Down Along the Dynamic Phase Boundary in Ising Meanfield Dynamics

2010-05-04

arxiv.org/abs/1005.0565v1

Int. J. Mod. Phys. 21 (2010) 481

Physics

Condensed Matter

Statistical Mechanics

6 pages Latex, 5 figures

Scientific paper

We studied the dynamical phase transition in kinetic Ising ferromagnets driven by oscillating magnetic field in meanfield approximation. The meanfield differential equation was solved by sixth order Runge-Kutta-Felberg method. The time averaged magnetisation plays the role of the dynamic order parameter. We studied the relaxation behaviour of the dynamic order parameter close to the transition temperature, which depends on the amplitude of the applied magnetic field. We observed the critical slowing down along the dynamic phase boundary. We proposed a power law divergence of the relaxation time and estimated the exponent. We also found its dependence on the field amplitude and compared the result with the exact value in limiting case.

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