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We consider a one-dimensional gas of two kinds of particles with different masses interacting through short range interactions. The system exhibits an extreme form of the Soret effect: when the ends of the system are in contact with thermal baths of different temperatures, there is complete separation of the species. We show how this separation can be well described in the Boltzmann approximation and discuss the origin of this odd behavior.
10 pages, REVTeX, 9 eps figures
short range interactions, Rarefied gas flows, Boltzmann equation in fluid mechanics, Statistical Mechanics (cond-mat.stat-mech), FOS: Physical sciences, Irreversible thermodynamics, including Onsager-Machlup theory, statistical mechanics, Chaotic Dynamics (nlin.CD), Nonlinear Sciences - Chaotic Dynamics, off-equilibrium systems, Condensed Matter - Statistical Mechanics
short range interactions, Rarefied gas flows, Boltzmann equation in fluid mechanics, Statistical Mechanics (cond-mat.stat-mech), FOS: Physical sciences, Irreversible thermodynamics, including Onsager-Machlup theory, statistical mechanics, Chaotic Dynamics (nlin.CD), Nonlinear Sciences - Chaotic Dynamics, off-equilibrium systems, Condensed Matter - Statistical Mechanics
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