Author: Chliamovitch Gregor Malaspinas Orestis Chopard Bastien
Publisher: MDPI
E-ISSN: 1099-4300|19|8|381-381
ISSN: 1099-4300
Source: Entropy, Vol.19, Iss.8, 2017-07, pp. : 381-381
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Abstract
In a recent paper (Chliamovitch, et al., 2015), we suggested using the principle of maximum entropy to generalize Boltzmann’s Stosszahlansatz to higher-order distribution functions. This conceptual shift of focus allowed us to derive an analog of the Boltzmann equation for the two-particle distribution function. While we only briefly mentioned there the possibility of a hydrodynamical treatment, we complete here a crucial step towards this program. We discuss bilocal collisional invariants, from which we deduce the two-particle stationary distribution. This allows for the existence of equilibrium states in which the momenta of particles are correlated, as well as for the existence of a fourth conserved quantity besides mass, momentum and kinetic energy.
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