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Universal density functional approach to the calculation of correlation energies of atoms

✍ Scribed by Swapan K. Ghosh; Alok Samanta; B. M. Deb

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
133 KB
Volume
62
Category
Article
ISSN
0020-7608

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✦ Synopsis

A new local density functional approach for the calculation of correlation energies of many-electron atomic systems is proposed by using the exact results for the correlation energy of a two-electron system bound by a harmonic oscillator external potential. This is motivated by the fact that the correlation energy is a universal functional of the electron density, and the form of this functional is independent of the external potential. The calculated numerical results for the correlation energies show very good agreement with the standard values reported in the literature.

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