Título:
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Studying Avalanches in the ground-state of the two-dimensional random field Ising model driven by an external field
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Autor/a:
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Frontera Beccaria, Carlos; Vives i Santa-Eulàlia, Eduard
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Otros autores:
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Universitat de Barcelona |
Abstract:
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We study the exact ground state of the two-dimensional random-field Ising model as a function of both the external applied field B and the standard deviation ¿ of the Gaussian random-field distribution. The equilibrium evolution of the magnetization consists in a sequence of discrete jumps. These are very similar to the avalanche behavior found in the out-of-equilibrium version of the same model with local relaxation dynamics. We compare the statistical distributions of magnetization jumps and find that both exhibit power-law behavior for the same value of ¿. The corresponding exponents are compared. |
Materia(s):
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-Física estadística -Termodinàmica -Sistemes dinàmics diferenciables -Equacions d'estat -Transformacions de fase (Física estadística) -Statistical physics -Thermodynamics -Differentiable dynamical systems -Equations of state -Phase transformations (Statistical physics) |
Derechos:
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(c) The American Physical Society, 2000
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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The American Physical Society
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