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- W1972047385 abstract "In hypernetted-chain calculations of liquid 4He, elementary diagrams are needed to reconcile the differences between different energy functionals and obtain the correct saturation density and binding energy. Unfortunately, it is only practical to sum small sets of elementary diagrams. In this work, two different ways of grouping elementary diagrams are compared. Diagrams are categorized according to either the number of points or the bond excess, the number of bonds minus the number of points. The two schemes sum plausible and rather different sets of diagrams, yet at any level of truncation considered, the results are similar in the region where the contribution to the energy is large. This agreement provides a numerical check on the convergence of the elementary diagram sum and suggests that results obtained with truncated sums may be quite reliable." @default.
- W1972047385 created "2016-06-24" @default.
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- W1972047385 date "1979-08-01" @default.
- W1972047385 modified "2023-09-28" @default.
- W1972047385 title "Elementary diagram calculations for helium" @default.
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- W1972047385 doi "https://doi.org/10.1016/0370-2693(79)90573-2" @default.
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