Studying Avalanches in the ground-state of the two-dimensional random field Ising model driven by an external field
Contribuinte(s) |
Universitat de Barcelona |
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Data(s) |
26/07/2011
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Resumo |
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. |
Identificador | |
Idioma(s) |
eng |
Publicador |
The American Physical Society |
Direitos |
(c) The American Physical Society, 2000 |
Palavras-Chave | #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) |
Tipo |
info:eu-repo/semantics/article |