Inhomogeneous diffusion and ergodicity breaking induced by global memory effects
- Autores
- Budini, Adrian Adolfo
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We introduce a class of discrete random walk model driven by global memory effects. At any time the right-left transitions depend on the whole previoushistory of the walker, being defined by an urn-like memory mechanism. The characteristic function is calculated in an exact way, which allows us todemonstrate that the ensemble of realizations is ballistic. Asymptoticallyeach realization is equivalent to that of a biased Markovian diffusion process with transition rates that strongly differs from one trajectory to another. Using this "inhomogeneous diffusion" feature the ergodic properties of the dynamics are analytically studied through the time-averaged moments. Even in the long time regime they remain random objects. While their average over realizations recover the corresponding ensemble averages, departure between time and ensemble averages is explicitly shown through their probability densities. For the density of the second time-averaged moment an ergodic limit and the limit of infinite lag times do not commutate. All these effects are induced by the memory effects. A generalized Einstein fluctuation-dissipation relation is also obtained for the time-averaged moments.
Fil: Budini, Adrian Adolfo. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina - Materia
-
Sistemas No-Ergodicos
Super-Difusion
Relation de Einstein - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/74374
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Inhomogeneous diffusion and ergodicity breaking induced by global memory effectsBudini, Adrian AdolfoSistemas No-ErgodicosSuper-DifusionRelation de Einsteinhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We introduce a class of discrete random walk model driven by global memory effects. At any time the right-left transitions depend on the whole previoushistory of the walker, being defined by an urn-like memory mechanism. The characteristic function is calculated in an exact way, which allows us todemonstrate that the ensemble of realizations is ballistic. Asymptoticallyeach realization is equivalent to that of a biased Markovian diffusion process with transition rates that strongly differs from one trajectory to another. Using this "inhomogeneous diffusion" feature the ergodic properties of the dynamics are analytically studied through the time-averaged moments. Even in the long time regime they remain random objects. While their average over realizations recover the corresponding ensemble averages, departure between time and ensemble averages is explicitly shown through their probability densities. For the density of the second time-averaged moment an ergodic limit and the limit of infinite lag times do not commutate. All these effects are induced by the memory effects. A generalized Einstein fluctuation-dissipation relation is also obtained for the time-averaged moments.Fil: Budini, Adrian Adolfo. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaAmerican Physical Society2016-11-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/74374Budini, Adrian Adolfo; Inhomogeneous diffusion and ergodicity breaking induced by global memory effects; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 94; 28-11-2016; 52142-1/101539-3755CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.94.052142info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.94.052142info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:07Zoai:ri.conicet.gov.ar:11336/74374instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:46:07.319CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
title |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
spellingShingle |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects Budini, Adrian Adolfo Sistemas No-Ergodicos Super-Difusion Relation de Einstein |
title_short |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
title_full |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
title_fullStr |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
title_full_unstemmed |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
title_sort |
Inhomogeneous diffusion and ergodicity breaking induced by global memory effects |
dc.creator.none.fl_str_mv |
Budini, Adrian Adolfo |
author |
Budini, Adrian Adolfo |
author_facet |
Budini, Adrian Adolfo |
author_role |
author |
dc.subject.none.fl_str_mv |
Sistemas No-Ergodicos Super-Difusion Relation de Einstein |
topic |
Sistemas No-Ergodicos Super-Difusion Relation de Einstein |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We introduce a class of discrete random walk model driven by global memory effects. At any time the right-left transitions depend on the whole previoushistory of the walker, being defined by an urn-like memory mechanism. The characteristic function is calculated in an exact way, which allows us todemonstrate that the ensemble of realizations is ballistic. Asymptoticallyeach realization is equivalent to that of a biased Markovian diffusion process with transition rates that strongly differs from one trajectory to another. Using this "inhomogeneous diffusion" feature the ergodic properties of the dynamics are analytically studied through the time-averaged moments. Even in the long time regime they remain random objects. While their average over realizations recover the corresponding ensemble averages, departure between time and ensemble averages is explicitly shown through their probability densities. For the density of the second time-averaged moment an ergodic limit and the limit of infinite lag times do not commutate. All these effects are induced by the memory effects. A generalized Einstein fluctuation-dissipation relation is also obtained for the time-averaged moments. Fil: Budini, Adrian Adolfo. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina |
description |
We introduce a class of discrete random walk model driven by global memory effects. At any time the right-left transitions depend on the whole previoushistory of the walker, being defined by an urn-like memory mechanism. The characteristic function is calculated in an exact way, which allows us todemonstrate that the ensemble of realizations is ballistic. Asymptoticallyeach realization is equivalent to that of a biased Markovian diffusion process with transition rates that strongly differs from one trajectory to another. Using this "inhomogeneous diffusion" feature the ergodic properties of the dynamics are analytically studied through the time-averaged moments. Even in the long time regime they remain random objects. While their average over realizations recover the corresponding ensemble averages, departure between time and ensemble averages is explicitly shown through their probability densities. For the density of the second time-averaged moment an ergodic limit and the limit of infinite lag times do not commutate. All these effects are induced by the memory effects. A generalized Einstein fluctuation-dissipation relation is also obtained for the time-averaged moments. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11-28 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/74374 Budini, Adrian Adolfo; Inhomogeneous diffusion and ergodicity breaking induced by global memory effects; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 94; 28-11-2016; 52142-1/10 1539-3755 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/74374 |
identifier_str_mv |
Budini, Adrian Adolfo; Inhomogeneous diffusion and ergodicity breaking induced by global memory effects; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 94; 28-11-2016; 52142-1/10 1539-3755 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevE.94.052142 info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.94.052142 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613441219723264 |
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13.070432 |