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- W2014533260 abstract "The relation between a variational method and a formally complete perturbation series for the energy of a finite system of fermions is studied. If certain assumptions about convergence are valid the variational method minimises the size of the sum of correction terms in the perturbation series at the point of self consistency determined from the leading term in this series. Away from self-consistency the sum of the correction terms becomes large. Although the first few correction terms appear to represent surface energies, their sum gives a volume energy. The usual method of defining an infinite medium corresponds to a limiting prrocess which throws away the dominant correction terms except possibly at the point of self-consistency. The limiting process elsewhere violates the conditions under which the formal series for the energy corresponds to an eigenvalue of the Schrödinger equation." @default.
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- W2014533260 date "1958-01-01" @default.
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- W2014533260 title "Series expansions and variational methods for the energy of a system of fermions" @default.
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- W2014533260 doi "https://doi.org/10.1016/0029-5582(58)90323-7" @default.
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