Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts

Static granular packs have been studied in the last three decades in the frame of a modi ed equilibrium statistical mechanics that assumes ergodicity as a basic postulate. The canonical example on which this framework is tested consists in the series of static con gurations visited by a granular col...

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Detalles Bibliográficos
Autores principales: Gago, Paula, Maza, Diego, Pugnaloni, Luis
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Papers in Physics 2018
Materias:
Ergodicity breaking; Tapped Granular Packs
Acceso en línea:http://hdl.handle.net/20.500.12272/2792
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2792
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Ergodicity breaking; Tapped Granular Packs
spellingShingle Ergodicity breaking; Tapped Granular Packs
Gago, Paula
Maza, Diego
Pugnaloni, Luis
Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
topic_facet Ergodicity breaking; Tapped Granular Packs
description Static granular packs have been studied in the last three decades in the frame of a modi ed equilibrium statistical mechanics that assumes ergodicity as a basic postulate. The canonical example on which this framework is tested consists in the series of static con gurations visited by a granular column subjected to taps. By analyzing the response of a realistic model of grains, we demonstrate that volume and stress variables visit di erent regions of the phase space at low tap intensities in di erent realizations of the experiment. We show that the tap intensity beyond which sampling by tapping becomes ergodic coincides with the forcing necessary to break all particle{particle contacts during each tap. These results imply that the well-known \reversible" branch of tapped granular columns is only valid at relatively high tap intensities.
format Artículo
publishedVersion
Artículo
author Gago, Paula
Maza, Diego
Pugnaloni, Luis
author_facet Gago, Paula
Maza, Diego
Pugnaloni, Luis
author_sort Gago, Paula
title Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
title_short Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
title_full Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
title_fullStr Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
title_full_unstemmed Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
title_sort ergodic nonergodic transition in tapped granular systems; the role of persistent contacts
publisher Papers in Physics
publishDate 2018
url http://hdl.handle.net/20.500.12272/2792
work_keys_str_mv AT gagopaula ergodicnonergodictransitionintappedgranularsystemstheroleofpersistentcontacts
AT mazadiego ergodicnonergodictransitionintappedgranularsystemstheroleofpersistentcontacts
AT pugnaloniluis ergodicnonergodictransitionintappedgranularsystemstheroleofpersistentcontacts
bdutipo_str Repositorios
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