Subspace theory with spherically symmetric densities.
J Chem Phys
; 154(7): 074103, 2021 Feb 21.
Article
in En
| MEDLINE
| ID: mdl-33607892
ABSTRACT
Recently, it has been proved that a set of spherically symmetric non-degenerate densities determines uniquely the Coulomb external potential. This theory is now extended to degenerate states. Euler equations and Kohn-Sham equations are derived and a novel form of the virial theorem is presented. It is emphasized that degenerate states of atoms can be rigorously treated as spherically symmetric when a subspace density is used with equal weighting factors.
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MEDLINE
Language:
En
Year:
2021
Type:
Article