Abstract:
A recently proposed 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. © 2007 The American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Extended Gibbs ensembles with flow |
Autor: | Ison, M.J.; Gulminelli, F.; Dorso, C.O. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428, Argentina LPC Caen, ENSICAEN, CNRS/IN2P3, Caen, France Department of Engineering, University of Leicester, LE1 7RH, United Kingdom
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Palabras clave: | Energy conservation; Gibbs free energy; Parameter estimation; Lagrange parameters; Lennard Jones system; Microstate distribution; Sizable effects; Molecular dynamics |
Año: | 2007
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Volumen: | 76
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Número: | 5
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DOI: |
http://dx.doi.org/10.1103/PhysRevE.76.051120 |
Título revista: | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
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Título revista abreviado: | Phys. Rev. E Stat. Nonlinear Soft Matter Phys.
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ISSN: | 15393755
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CODEN: | PLEEE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v76_n5_p_Ison |
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Citas:
---------- APA ----------
Ison, M.J., Gulminelli, F. & Dorso, C.O.
(2007)
. Extended Gibbs ensembles with flow. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 76(5).
http://dx.doi.org/10.1103/PhysRevE.76.051120---------- CHICAGO ----------
Ison, M.J., Gulminelli, F., Dorso, C.O.
"Extended Gibbs ensembles with flow"
. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 76, no. 5
(2007).
http://dx.doi.org/10.1103/PhysRevE.76.051120---------- MLA ----------
Ison, M.J., Gulminelli, F., Dorso, C.O.
"Extended Gibbs ensembles with flow"
. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol. 76, no. 5, 2007.
http://dx.doi.org/10.1103/PhysRevE.76.051120---------- VANCOUVER ----------
Ison, M.J., Gulminelli, F., Dorso, C.O. Extended Gibbs ensembles with flow. Phys. Rev. E Stat. Nonlinear Soft Matter Phys. 2007;76(5).
http://dx.doi.org/10.1103/PhysRevE.76.051120