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Journal of Statistical Physics

, Volume 78, Issue 3–4, pp 893–916 | Cite as

Relaxation times in a finite Ising system with random impurities

  • K. Oerding
Articles

Abstract

Finite-size scaling effects of the Ising model with quenched random impurities are studied, focusing on critical dynamics. In contrast to the pure Ising model, disordered systems are characterized by continuous relaxation time spectra. Dynamic field theory is applied to compute the spectral densities of the magnetizationM(t) and ofM2(t). In addition, universal cumulant ratios are calculated to second order in ε1/4, where ε=4−d andd<4 denotes the spatial dimension.

Key Words

Dynamic critical phenomena disordered spin systems Ising model finite size scaling 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • K. Oerding
    • 1
  1. 1.Institut für Theoretische Physik IIIHeinrich-Heine-UniversitätDüsseldorfGermany

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