Field Theoretic Formulation of Kinetic theory: I. Basic Development

Details Field Theoretic Formulation of Kinetic theory: I. Basic Development Field Theoretic Formulation of Kinetic theory: I. Basic Development

2011-11-02

arxiv.org/abs/1111.0571v1

Physics

Condensed Matter

Statistical Mechanics

45 pages

Scientific paper

We show how kinetic theory, the statistics of classical particles obeying Newtonian dynamics, can be formulated as a field theory. The field theory can be organized to produce a self-consistent perturbation theory expansion in an effective interaction potential. The need for a self-consistent approach is suggested by our interest in investigating ergodic-nonergodic transitions in dense fluids. The formal structure we develop has been implemented in detail for the simpler case of Smoluchowski dynamics. One aspect of the approach is the identification of a core problem spanned by the variables \rho the number density and B a response density. In this paper we set up the perturbation theory expansion with explicit development at zeroth and first order. We also determine all of the cumulants in the noninteracting limit among the core variables \rho and B.

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