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Journal of the Physical Society of Japan

Evolution of the Density Matrix of Large Systems

Lesser Blum

Published Nov 1, 1962• 1 citation
Publisher

Abstract

The time dependent perturbation series for the density matrix is shown to be equivalent to an integral equation. This integral equation is given in the form of a series in the coupling parameter λ, which is allways convergent when t →∞. The terms of this series can be represented by time retarded operators.
DOI
10.1143/jpsj.17.1689

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