Journal of Statistical Physics

, Volume 57, Issue 3–4, pp 581–593 | Cite as

Hard-sphere binary-collision operators

  • J. R. Dorfman
  • M. H. Ernst


The time displacement operator is described for a system of hard-sphere particles. We show how to avoid needing a representation for this operator in unphysical regions of phase space, and how to construct a useful representation in terms of binary collision operators in the physical region. The various binary collision operators used for hard-sphere systems are derived for the case of a system of two spheres, and the results are generalized toN-particle systems.

Key words

Binary collision operator hard spheres kinetic theory Liouville operator 


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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • J. R. Dorfman
    • 1
    • 2
  • M. H. Ernst
    • 3
  1. 1.Institute for Physical Science and TechnologyUniversity of MarylandCollege Park
  2. 2.Department of Physics and AstronomyUniversity of MarylandCollege Park
  3. 3.Instituut voor Theoretische FysicaRijksuniversiteit, UtrechtTA UtrechtThe Netherlands

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