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Derivation of the Brueckner many-body theory

1957; Royal Society; Volume: 239; Issue: 1217 Linguagem: Inglês

10.1098/rspa.1957.0037

2053-9169

Jeffrey Goldstone,

Cold Atom Physics and Bose-Einstein Condensates

An exact formal solution is obtained to the problem of a system of fermions in interaction. This solution is expressed in a form which avoids the problem of unlinked clusters in manybody theory. The technique of Feynman graphs is used to derive the series and to define linked terms. The graphs are those appropriate to a system of many fermions and are used to give a new derivation of the Hartree-Fock and Brueckner methods for this problem.