Statistical physics and fluctuations in ballistic non-equilibrium systems

F.X. Alvarez and D. Jou

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 12, 2367-2372

Abstract: In nonequilibrium systems in the ballistic transport regime, every point of the system contains particles arriving from different regions–each of them at different temperatures–and there are only few collisions, in such a way that equilibrium between the different populations will be reached very slowly. Here, we tentatively approach the local distribution function by a superposition of local-equilibrium distribution functions with different temperatures, corresponding to the different starting positions of the particles. In a second-order expansion, we find a distribution function which depends not only on the Hamiltonian H but also on H2, and we study the additional contribution to energy fluctuations.

Keywords: Canonical ensemble; Nonequilibrium thermodynamics; Ballistic transport; Heat transport (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:12:p:2367-2372

DOI: 10.1016/j.physa.2009.02.030

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