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physics.atom-ph2016
The Levy-Perdew-Sahni equation for the density: accurate effective potential and self-consistent solution for two-electron atomic systems
Rabeet Singh Chauhan, Manoj K. Harbola
Levy-Perdew-Sahni (LPS) provided a proof of the connection between the density and ionization potential of a many-electron system using the equation for the density directly. This…
physics.atom-ph2015
Highly accurate wavefunctions for two-electron systems using two parameteres
Rabeet Singh Chauhan, Manoj K. Harbola
It is shown for two electron atoms that ground-state wavefunctions of the form \begin{equation} Ψ(\vec{r_{1}}, \vec{r_{2}})=ϕ(\vec{r_{1}})ϕ(\vec{r_{2}})(\cosh ar_{1}+\cosh ar_{2})(…