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Physical properties of many-electron systems : a study of approximation methods with emphasis on perturbation theory

Osvaldo Goscinski

Published Jan 1, 1970• 0 citations
OpenAlex

Abstract

Physical properties of many-electron systems : a study of approximation methods with emphasis on perturbation theory

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The quantum stationary state method in the distorted wave Born approximation, applied to a two-body collision system in the presence of a radiation field, gives explicit expressions of the one-perturber profile and of the corresponding correlation function. The independent perturber approximation, when the two-body dynamic is separated from the statistical problem, is revisited without having recourse to a time-dependent formalism. Emphasis is given to broadening by electrons for which inelastic processes are important.