Wang–Landau study of the critical behavior of the bimodal 3D random field Ising model

Laura Hernández and Horacio Ceva

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 12, 2793-2801

Abstract: We apply the Wang–Landau method to the study of the critical behavior of the three-dimensional random field Ising model with a bimodal probability distribution. For high values of the random field intensity we find that the energy probability distribution at the transition temperature is double peaked, suggesting that the phase transition is of first order. On the other hand, the transition looks continuous for low values of the field intensity. In spite of the large sample to sample fluctuations observed, the double peak in the probability distribution is always present for high fields.

Keywords: Random field Ising model; Wang-Landau method; Phase transition (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:12:p:2793-2801

DOI: 10.1016/j.physa.2008.01.021

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