Journal of Statistical Physics

, Volume 110, Issue 3–6, pp 591–609

Crossover Critical Behavior in the Three-Dimensional Ising Model

  • Young C. Kim
  • Mikhail A. Anisimov
  • Jan V. Sengers
  • Erik Luijten
Article

DOI: 10.1023/A:1022199516676

Cite this article as:
Kim, Y.C., Anisimov, M.A., Sengers, J.V. et al. Journal of Statistical Physics (2003) 110: 591. doi:10.1023/A:1022199516676

Abstract

The character of critical behavior in physical systems depends on the range of interactions. In the limit of infinite range of the interactions, systems will exhibit mean-field critical behavior, i.e., critical behavior not affected by fluctuations of the order parameter. If the interaction range is finite, the critical behavior asymptotically close to the critical point is determined by fluctuations and the actual critical behavior depends on the particular universality class. A variety of systems, including fluids and anisotropic ferromagnets, belongs to the three-dimensional Ising universality class. Recent numerical studies of Ising models with different interaction ranges have revealed a spectacular crossover between the asymptotic fluctuation-induced critical behavior and mean-field-type critical behavior. In this work, we compare these numerical results with a crossover Landau model based on renormalization-group matching. For this purpose we consider an application of the crossover Landau model to the three-dimensional Ising model without fitting to any adjustable parameters. The crossover behavior of the critical susceptibility and of the order parameter is analyzed over a broad range (ten orders) of the scaled distance to the critical temperature. The dependence of the coupling constant on the interaction range, governing the crossover critical behavior, is discussed.

Critical phenomena crossover Landau model Ising model order parameter susceptibility 

Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • Young C. Kim
    • 1
  • Mikhail A. Anisimov
    • 1
    • 2
  • Jan V. Sengers
    • 1
    • 2
  • Erik Luijten
    • 3
  1. 1.Institute for Physical Science and TechnologyUniversity of MarylandCollege Park
  2. 2.Department of Chemical EngineeringUniversity of MarylandCollege Park
  3. 3.Department of Materials Science and EngineeringUniversity of Illinois, Urbana, Illinois 61801USA

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