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Critical Slowing Down Along The Dynamic Phase Boundary In Ising Meanfield Dynamics

Author

Listed:
  • MUKTISH ACHARYYA

    (Department of Physics, Presidency College, 86/1 College Street, Calcutta-700073, India)

  • AJANTA BHOWAL ACHARYYA

    (Department of Physics, Lady Brabourne College, P-1/2 Surawardy Avenue, Calcutta-700017, India)

Abstract

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 magnetization plays the role of the dynamic order parameter. We studied the relaxation behavior 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.

Suggested Citation

  • Muktish Acharyya & Ajanta Bhowal Acharyya, 2010. "Critical Slowing Down Along The Dynamic Phase Boundary In Ising Meanfield Dynamics," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 21(04), pages 481-487.
    • Handle: RePEc:wsi:ijmpcx:v:21:y:2010:i:04:n:s0129183110015233
    DOI: 10.1142/S0129183110015233
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