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Exact correlated kinetic energy related to the electron density for two-electron model atoms with harmonic confinement

AuthorsMarch, Norman H.; Akbari, A. ; Rubio, Angel
Issue DateOct-2007
CitationPhysics Letters A 370(5-6): 509-511 (2007)
AbstractTime-dependent density functional theory (TDDFT) is an efficient method to evaluate excited state properties of electron systems. However, it is not so well known that it also provides a very accurate prescription to obtain correlation energies by using the so-called adiabatic connection fluctuation dissipation theorem (ACFDT). In this paper we present a detailed study of the ACFDT performance in bulk solids and jellium clusters. These results confirm the reliability of the ACFDT scheme and pave the way to future applications where standard implementations of the Kohn-Sham density functional theory dramatically fail, in particular to weakly bound systems and van der Waals complexes.
Publisher version (URL)http://dx.doi.org/10.1016/j.physleta.2007.05.097
Appears in Collections:(CFM) Artículos
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