Expansion dynamics of Lennard-Jones systems

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, Matías Julián, Dorso, Claudio Oscar
Publicado: 2008
Materias:
Boltzmann equation
Statistical mechanics
Vacuum
Boltzmann approximation
Lennard-Jones systems
Molecular dynamics
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v77_n3_p_Ison
http://hdl.handle.net/20.500.12110/paper_15393755_v77_n3_p_Ison
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_15393755_v77_n3_p_Ison2023-06-08T16:20:36Z Expansion dynamics of Lennard-Jones systems Ison, Matías Julián Dorso, Claudio Oscar 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v77_n3_p_Ison 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, Matías Julián
Dorso, Claudio Oscar
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.
author Ison, Matías Julián
Dorso, Claudio Oscar
author_facet Ison, Matías Julián
Dorso, Claudio Oscar
author_sort Ison, Matías Julián
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
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v77_n3_p_Ison
http://hdl.handle.net/20.500.12110/paper_15393755_v77_n3_p_Ison
work_keys_str_mv AT isonmatiasjulian expansiondynamicsoflennardjonessystems
AT dorsoclaudiooscar expansiondynamicsoflennardjonessystems
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