diff --git a/Manuscript/G2-srDFT.tex b/Manuscript/G2-srDFT.tex index 5fbb346..4d206ba 100644 --- a/Manuscript/G2-srDFT.tex +++ b/Manuscript/G2-srDFT.tex @@ -414,6 +414,101 @@ As the e-e cusp originates from the divergence of the Coulomb operator at $r_{12 Therefore, the impact of the incompleteness of $\Bas$ can be viewed as a removal of the divergence of the Coulomb interaction at $r_{12} = 0$. The present paragraph briefly describes how to obtain an effective operator $\W{\wf{}{\Bas}}{}(\bx{1},\bx{2})$ which i) is finite at the e-e coalescence points as long as an incomplete basis set is used, and ii) tends to the genuine, unbounded $r_{12}^{-1}$ Coulomb operator in the limit of a complete basis set. + + +%================================================================= +\subsection{Complementary functional} +%================================================================= +\label{sec:ecmd} + +Following Ref.~\onlinecite{GinPraFerAssSavTou-JCP-18}, we propose here to approximate $\bE{}{\Bas}[\n{}{}]$ using a specific class of SR-DFT energy functionals known as ECMD whose general definition reads \cite{TouGorSav-TCA-05} +\begin{multline} + \label{eq:ec_md_mu} + \bE{}{\sr}[\n{}{}(\br{}),\rsmu{}{}] = \min_{\wf{}{} \to \n{}{}(\br{})} \mel*{\Psi}{\hT + \hWee{}}{\wf{}{}} + \\ + - \mel*{\wf{}{\rsmu{}{}}[\n{}{}(\br{})]}{\hT + \hWee{}}{\wf{}{\rsmu{}{}}[\n{}{}(\br{})]}, +\end{multline} +where $\wf{}{\rsmu{}{}}[\n{}{}(\br{})]$ is defined by the constrained minimization +\begin{equation} +\label{eq:argmin} + \wf{}{\rsmu{}{}}[\n{}{}(\br{})] = \arg \min_{\wf{}{} \to \n{}{}(\br{})} \mel*{\wf{}{}}{\hT + \hWee{\lr,\rsmu{}{}}}{\wf{}{}}, +\end{equation} +with +\begin{equation} +\label{eq:weemu} + \hWee{\lr,\rsmu{}{}} = \sum_{i