Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-08-22
J. Stat. Mech. (2007) P08031
Physics
Condensed Matter
Statistical Mechanics
16 pages, 1 figure, to be published on Journal of Statistical Mechanics: Theory and Experiments
Scientific paper
10.1088/1742-5468/2007/08/P08031
We consider the velocity fluctuations of a system of particles described by the Inelastic Maxwell Model. The present work extends the methods, previously employed to obtain the one-particle velocity distribution function, to the study of the two particle correlations. Results regarding both the homogeneous cooling process and the steady state driven regime are presented. In particular we obtain the form of the pair correlation function in the scaling region of the homogeneous cooling process and show that some of its moments diverge. This fact has repercussions on the behavior of the energy fluctuations of the model.
Bettolo Marconi Umberto Marini
Costantini Giulio
Puglisi Alfio
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