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Persistent URL http://purl.org/net/epubs/work/53144
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Record Id 53144
Title Fluid models from kinetic models using a geometric averaging procedure
Abstract We interpret the Lorentz force equation as a geodesic equation associated with a non-linear connection. Using a geometric averaging procedure, we prove that for narrow and smooth one-particle distribution functions whose supports are invariant under the flow of the Lorentz equation, a bunch of charged point particles can be described by a charged cold fluid model in the ultra-relativistic regime. The method used to prove this result does not require additional hypotheses on the higher moments of the distribution. This is accomplished by estimating the expressions that include the differential operators appearing in the charged cold fluid model equation. Under the specified conditions of narrowness and ultra-relativistic dynamics, it turns out that these differential expressions are close to zero, justifying the use of the charged cold fluid model. The method presented in the work can also be applied to justify the use of warm plasmas and other models.
Organisation CI
Keywords Physics
Funding Information
Related Research Object(s): 24355481
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Language English (EN)
Type Details URI(s) Local file(s) Year
Preprint Journal of Geometry and Physics 2009. http://arxiv.org/abs/0912.2767 2009