On two-body collisions in an equilibrating Fermi gas

  • H. Feldmeier
  • P. Buck
II. Correlations and Dispersions
Part of the Lecture Notes in Physics book series (LNP, volume 171)


Although the model we studied is oversimplified, it illuminates the dynamical evolution of two Fermi gases which are brought into contact. The dissipation introduced by a residual two-body interaction was illustrated with the Wigner function and the macroscopic variable NL which counts the number of particles in one half of the system.

The origin of the small variances in TDHF was discussed, and the results of the model study lead to the prediction that inclusion of short-ranged collision terms in mean-field theories will not increase essentially the fluctuations in the macroscopic variables.


Wigner Function Collision Term Macroscopic Variable Dinger Equation Closed Quantum System 
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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • H. Feldmeier
    • 1
  • P. Buck
    • 1
  1. 1.Institut für Kernphysik, Technische HochschuleDarmstadt

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