Low-energy excitations in the three-dimensional random-field Ising model
M. Zumsande, A.K. Hartmann
TL;DR
This paper investigates low-energy excitations in the 3D random-field Ising model using advanced algorithms, revealing properties of spin clusters that support the droplet-model description of the system.
Contribution
It introduces extended algorithms to analyze low-energy excitations in the 3D RFIM and provides new insights into the properties of spin clusters.
Findings
Supports the droplet-model description for RFIM
Analyzes properties of connected spin clusters
Extends algorithms for studying low-energy excitations
Abstract
The random-field Ising model (RFIM), one of the basic models for quenched disorder, can be studied numerically with the help of efficient ground-state algorithms. In this study, we extend these algorithm by various methods in order to analyze low-energy excitations for the three-dimensional RFIM with Gaussian distributed disorder that appear in the form of clusters of connected spins. We analyze several properties of these clusters. Our results support the validity of the droplet-model description for the RFIM.
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