Inhomogeneous STLS theory and TDCDFT
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We consider the inhomogeneous Singwi-Tosi-Land-Sjolander theory (ISTLS) of Dobson, Wang and Gould (Phys. Rev. B, 2002, 66, 081108(R)), and possible generalizations, in the context of time dependent current density functional theory (TDCDFT) and its tensor exchange correlation kernel fxc. We show that ISTLS corresponds to an fxc that is nonlocal in space but has only a trivial frequency dependence, and only a very simple tensorial structure. We propose approaches that may obtain more realistic structure while retaining the positive ISTLS features, namely that strong spatial inhomogeneity is allowed, with a kernel that contains physics specific to the inhomogeneous system under study, rather than being based on uniform-gas data
Physical Chemistry Chemical Physics
Copyright 2009 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
Condensed Matter Modelling and Density Functional Theory