paper

Universality in the three-dimensional random-field Ising model

arXiv:1304.0318 · doi:10.1103/PhysRevLett.110.227201

Abstract

We solve a long-standing puzzle in Statistical Mechanics of disordered systems. By performing a high-statistics simulation of the D=3 random-field Ising model at zero temperature for different shapes of the random-field distribution, we show that the model is ruled by a single universality class. We compute the complete set of critical exponents for this class, including the correction-to-scaling exponent, and we show, to high numerical accuracy, that scaling is described by two independent exponents. Discrepancies with previous works are explained in terms of strong scaling corrections.

7 pages, 4 figures, 4 tables. Version to be published in Phys. Rev. Lett. Appendices contain Supplemental Material

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