Expansion dynamics of Lennard-Jones systems

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The dynamics of the expansion of a Lennard-Jones system, initially confined at high density and subsequently expanding freely in a vacuum, is compared with an expanding statistical ensemble derived in the diluted quasi-ideal Boltzmann approximation. The description proves to be fairly accurate at pr...

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Autores principales: Ison, M.J., Gulminelli, F., Dorso, C.O.
Formato: JOUR
Materias:
Boltzmann equation
Statistical mechanics
Vacuum
Boltzmann approximation
Lennard-Jones systems
Molecular dynamics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15393755_v77_n3_p_Ison
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15393755_v77_n3_p_Ison
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spelling todo:paper_15393755_v77_n3_p_Ison2023-10-03T16:22:19Z Expansion dynamics of Lennard-Jones systems Ison, M.J. Gulminelli, F. Dorso, C.O. Boltzmann equation Statistical mechanics Vacuum Boltzmann approximation Lennard-Jones systems Molecular dynamics The dynamics of the expansion of a Lennard-Jones system, initially confined at high density and subsequently expanding freely in a vacuum, is compared with an expanding statistical ensemble derived in the diluted quasi-ideal Boltzmann approximation. The description proves to be fairly accurate at predicting average one-body global observables, but important deviations are observed in the configuration-space structure of the events. Possible implications for finite expanding physical systems are outlined. © 2008 The American Physical Society. Fil:Ison, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dorso, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15393755_v77_n3_p_Ison
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Boltzmann equation
Statistical mechanics
Vacuum
Boltzmann approximation
Lennard-Jones systems
Molecular dynamics
spellingShingle Boltzmann equation
Statistical mechanics
Vacuum
Boltzmann approximation
Lennard-Jones systems
Molecular dynamics
Ison, M.J.
Gulminelli, F.
Dorso, C.O.
Expansion dynamics of Lennard-Jones systems
topic_facet Boltzmann equation
Statistical mechanics
Vacuum
Boltzmann approximation
Lennard-Jones systems
Molecular dynamics
description The dynamics of the expansion of a Lennard-Jones system, initially confined at high density and subsequently expanding freely in a vacuum, is compared with an expanding statistical ensemble derived in the diluted quasi-ideal Boltzmann approximation. The description proves to be fairly accurate at predicting average one-body global observables, but important deviations are observed in the configuration-space structure of the events. Possible implications for finite expanding physical systems are outlined. © 2008 The American Physical Society.
format JOUR
author Ison, M.J.
Gulminelli, F.
Dorso, C.O.
author_facet Ison, M.J.
Gulminelli, F.
Dorso, C.O.
author_sort Ison, M.J.
title Expansion dynamics of Lennard-Jones systems
title_short Expansion dynamics of Lennard-Jones systems
title_full Expansion dynamics of Lennard-Jones systems
title_fullStr Expansion dynamics of Lennard-Jones systems
title_full_unstemmed Expansion dynamics of Lennard-Jones systems
title_sort expansion dynamics of lennard-jones systems
url http://hdl.handle.net/20.500.12110/paper_15393755_v77_n3_p_Ison
work_keys_str_mv AT isonmj expansiondynamicsoflennardjonessystems
AT gulminellif expansiondynamicsoflennardjonessystems
AT dorsoco expansiondynamicsoflennardjonessystems
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