# 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} }

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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