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Abstract

In the last chapter, we derived the Boltzmann equation from a calculation based on first principles. In reaching the desired result, we had to make approximations and simplifications in our general approach to obtain the equation that gives us the particle distribution f in classical phase space of the variables R, T, and k. There are other, more heuristic ways of deriving the Boltzmann equation based on the mechanics of classical particles in a slowly varying electric field (Madelung 1978). It is certainly possible to view the Boltzmann equation as a transport model for classical particles quite apart from its relationship to the more fundamental non-equilibrium statistical mechanics. This is the historical context in which it was derived and used for many years. As we shall see later, it is useful to go beyond the classical understanding of the equation towards possible extensions which are not contained in the purely classical picture.

Keywords

Boltzmann Equation Drift Velocity Hydrodynamic Model Nonlinear Response Collision Term 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 1991

Authors and Affiliations

  • Wilfried Hänsch
    • 1
  1. 1.CharlotteUSA

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