Abstract

A brief survey of the Poisson analysis on the spaces of tempered distributions is given and the generalized Wick theorem for Poisson fields is formulated. For systems of charged particles, new representations in terms of integrals with respect to the Poisson measure are obtained for distribution functions and diagonal elements of a reduced density matrix; these representations are convenient for investigation of model systems of statistical mechanics by the cluster expansion method. In the quantum case, the Boltzmann, Fermi-Dirac, and Bose-Einstein statistics are studied.

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