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Title: Extended Gibbs ensembles with flow

Abstract

A recently proposed [Ph. Chomaz, F. Gulminelli, and O. Juillet, Ann. Phys. (Paris) 320, 135 (2005)] statistical treatment of finite unbound systems in the presence of collective motions is applied to a classical Lennard-Jones system, numerically simulated through molecular dynamics. In the ideal gas limit, the flow dynamics can be exactly recast into effective time-dependent Lagrange parameters acting on a standard Gibbs ensemble with an extra total energy conservation constraint. Using this same ansatz for the low-density freeze-out configurations of an interacting expanding system, we show that the presence of flow can have a sizable effect on the microstate distribution.

Authors:
 [1];  [2];  [1]
  1. Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428 (Argentina)
  2. LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen (France)
Publication Date:
OSTI Identifier:
21076261
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Additional Journal Information:
Journal Volume: 76; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevE.76.051120; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-651X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; ENERGY CONSERVATION; FREEZING OUT; GASES; LENNARD-JONES POTENTIAL; MOLECULAR DYNAMICS METHOD; SIMULATION; TIME DEPENDENCE

Citation Formats

Ison, M J, LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen, Gulminelli, F, and Dorso, C O. Extended Gibbs ensembles with flow. United States: N. p., 2007. Web. doi:10.1103/PHYSREVE.76.051120.
Ison, M J, LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen, Gulminelli, F, & Dorso, C O. Extended Gibbs ensembles with flow. United States. https://doi.org/10.1103/PHYSREVE.76.051120
Ison, M J, LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen, Gulminelli, F, and Dorso, C O. 2007. "Extended Gibbs ensembles with flow". United States. https://doi.org/10.1103/PHYSREVE.76.051120.
@article{osti_21076261,
title = {Extended Gibbs ensembles with flow},
author = {Ison, M J and LPC Caen, ENSICAEN, Universite de Caen, CNRS/IN2P3, Caen and Gulminelli, F and Dorso, C O},
abstractNote = {A recently proposed [Ph. Chomaz, F. Gulminelli, and O. Juillet, Ann. Phys. (Paris) 320, 135 (2005)] statistical treatment of finite unbound systems in the presence of collective motions is applied to a classical Lennard-Jones system, numerically simulated through molecular dynamics. In the ideal gas limit, the flow dynamics can be exactly recast into effective time-dependent Lagrange parameters acting on a standard Gibbs ensemble with an extra total energy conservation constraint. Using this same ansatz for the low-density freeze-out configurations of an interacting expanding system, we show that the presence of flow can have a sizable effect on the microstate distribution.},
doi = {10.1103/PHYSREVE.76.051120},
url = {https://www.osti.gov/biblio/21076261}, journal = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
issn = {1063-651X},
number = 5,
volume = 76,
place = {United States},
year = {Thu Nov 15 00:00:00 EST 2007},
month = {Thu Nov 15 00:00:00 EST 2007}
}