title: Universality in the three-dimensional random-field Ising model.
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.
authors.affiliation: Departamento de Física Teórica I, Universidad Complutense, E-28040 Madrid, Spain.
authors.forename: Nikolaos G
authors.initials: NG
authors.lastname: Fytas
authors.forename: Víctor
authors.initials: V
authors.lastname: Martín-Mayor