Diluted antiferromagnets in a field seem to be in a different universality class than the random-field Ising model

@article{Ahrens2013DilutedAI,
  title={Diluted antiferromagnets in a field seem to be in a different universality class than the random-field Ising model},
  author={Bjoern Ahrens and Jianping Xiao and Alexander K. Hartmann and Helmut G. Katzgraber},
  journal={Physical Review B},
  year={2013},
  volume={88}
}
  • Bjoern Ahrens, Jianping Xiao, +1 author Helmut G. Katzgraber
  • Published 2013
  • Physics
  • Physical Review B
  • We perform large-scale Monte Carlo simulations using the Machta-Newman-Chayes algorithms to study the critical behavior of both the diluted antiferromagnet in a field with 30% dilution and the random-field Ising model with Gaussian random fields for different field strengths. Analytical calculations by Cardy [Phys. Rev. B 29, 505 (1984)] predict that both models map onto each other and share the same universality class in the limit of vanishing fields. However, a detailed finite-size scaling… CONTINUE READING

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