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Correlation energy of two electrons in the high-density limit

Loos, Pierre-François; Gill, Peter M. W.


We consider the high-density-limit correlation energy Ec in D≥2 dimensions for the ¹Sground states of three two-electron systems: helium (in which the electrons move in a Coulombic field), spherium (in which they move on the surface of a sphere), and hookium (in which they move in a quadratic potential). We find that the Ec values are strikingly similar, depending strongly on D but only weakly on the external potential. We conjecture that for large D, the limiting correlation energy Ec∼−δ2/8 in...[Show more]

CollectionsANU Research Publications
Date published: 2009-12-22
Type: Journal article
Source: Journal of Chemical Physics
DOI: 10.1063/1.3275519


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