536 citations · 2.1k across the 27 of their papers we have counts for
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cond-mat.other2009★ 19 cited
Is there a physical meaning of the natural orbitals? Analysis of exactly solvable models
N. Helbig, I. V. Tokatly, A. Rubio
We investigate the suitability of natural orbitals as a basis for describing many-body excitations. We analyze to which extend the natural orbitals describe both bound as well as i…
cond-mat.str-el2009★ 90 cited
Exact Kohn-Sham potential of strongly correlated finite systems
N. Helbig, I. V. Tokatly, A. Rubio
The dissociation of molecules, even the most simple hydrogen molecule, cannot be described accurately within density functional theory because none of the currently available funct…