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A comment on functional integrals and many-body systems

✍ Scribed by Dalcio K. Dacol


Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
385 KB
Volume
97
Category
Article
ISSN
0378-4371

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✦ Synopsis


integral algorithms. It is shown in detail how the correct Green's functions are computed and how one recovers the structure of the ground state (which in the usual derivations is the starting point).


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✍ Ingvar Lindgren πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 1003 KB

A review is given of many-body perturbation methods, particularly in the all-order and coupled-cluster forms. Relativistic many-body schemes are analyzed in terms of one-and two-photon potentials, derived by means of QED. A complete second-order (nonradiative) calculation for He-like ions is present