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Sur la détermination de l'état fondamental d'un système de particules

Authors
Journal
Nuclear Physics
0029-5582
Publisher
Elsevier
Publication Date
Volume
7
Identifiers
DOI: 10.1016/0029-5582(58)90284-0

Abstract

Abstract The linked diagram expansions of the ground state energy and wave function of a system of particles are derived by a method involving the use of the time-dependent as well as the time-independent formulations of perturbation theory. The essential step is the derivation, in the time-dependent formulation, of a simple exponential formula obtained by summation of the disconnected vacuum-vacuum diagrams.

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