Violation of molecular chaos in dissipative gases

Thorsten Pöschel, Nikolai V. Brilliantov, Thomas Schwager

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Numerical simulations of a dissipative hard sphere gas reveal a dependence of the cooling rate on correlation of the particle velocities due to inelastic collisions. We propose a coefficient which characterizes the velocity correlations in the two-particle velocity distribution function and express the temperature decay rate in terms of this coefficient. The analytical results are compared with numerics.

Original languageEnglish
Pages (from-to)1263-1272
Number of pages10
JournalInternational Journal of Modern Physics C
Issue number9
Publication statusPublished - Nov 2002
Externally publishedYes


  • Dissipative gases
  • Granular gases
  • Kinetic gas theory
  • Many-particle systems
  • Velocity correlations


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