Diffusion in disordered lattices and related Heisenberg ferromagnets

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 ferro...

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Detalles Bibliográficos
Autores principales: Grynberg, Marcelo Daniel, Stinchcombe, R. B.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2000
Materias:
Física
Stretched exponential decay
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104522
http://hdl.handle.net/11336/98435
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104522
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Stretched exponential decay
spellingShingle Física
Stretched exponential decay
Grynberg, Marcelo Daniel
Stinchcombe, R. B.
Diffusion in disordered lattices and related Heisenberg ferromagnets
topic_facet Física
Stretched exponential decay
description 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.
format Articulo
Articulo
author Grynberg, Marcelo Daniel
Stinchcombe, R. B.
author_facet Grynberg, Marcelo Daniel
Stinchcombe, R. B.
author_sort Grynberg, Marcelo Daniel
title Diffusion in disordered lattices and related Heisenberg ferromagnets
title_short Diffusion in disordered lattices and related Heisenberg ferromagnets
title_full Diffusion in disordered lattices and related Heisenberg ferromagnets
title_fullStr Diffusion in disordered lattices and related Heisenberg ferromagnets
title_full_unstemmed Diffusion in disordered lattices and related Heisenberg ferromagnets
title_sort diffusion in disordered lattices and related heisenberg ferromagnets
publishDate 2000
url http://sedici.unlp.edu.ar/handle/10915/104522
http://hdl.handle.net/11336/98435
work_keys_str_mv AT grynbergmarcelodaniel diffusionindisorderedlatticesandrelatedheisenbergferromagnets
AT stinchcomberb diffusionindisorderedlatticesandrelatedheisenbergferromagnets
bdutipo_str Repositorios
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