Artículo
Diffusion in disordered lattices and related Heisenberg ferromagnets
Fecha de publicación:
12/2000
Editorial:
American Physical Society
Revista:
Physical Review E: Statistical Physics, Plasmas, Fluids and Related Interdisciplinary Topics
ISSN:
1063-651X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We study the diffusion of classical hard-core particles in disordered lattices within the formalism of a quantum spin representation. This analogy enables an exact treatment of noninstantaneous correlation functions at finite particle densities in terms of single spin excitations in disordered ferromagnetic backgrounds. Applications to diluted chains and percolation clusters are discussed. It is found that density fluctuations in the former exhibit a stretched exponential decay while an anomalous power law asymptotic decay is conjectured for the latter. © 2000 The American Physical Society.
Palabras clave:
Stretched exponential decay
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Articulos(IFLP)
Articulos de INST.DE FISICA LA PLATA
Articulos de INST.DE FISICA LA PLATA
Citación
Grynberg, Marcelo Daniel; Stinchcombe, R. B.; Diffusion in disordered lattices and related Heisenberg ferromagnets; American Physical Society; Physical Review E: Statistical Physics, Plasmas, Fluids and Related Interdisciplinary Topics; 61; 1; 12-2000; 324-331
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