C..26 LYP: Lee, Yang and Parr Correlation Functional

C. Lee, W. Yang and R. G. Parr, Phys. Rev. B 37, 785(1988); B. Miehlich, A. Savin, H. Stoll and H. Preuss, Chem. Phys. Letters 157, 200 (1989). \begin{dmath}
f=-4\,A\rho \left( a \right) \rho \left( b \right) \left( 1+{\frac...
...\right) \right) ^{2} \right)
\sigma \left( {\it aa} \right) \right)
,\end{dmath}

\begin{dmath}
\omega={e^{-{\frac {c}{\sqrt [3]{\rho}}}}}{\rho}^{-11/3} \left( 1+{
\frac {d}{\sqrt [3]{\rho}}} \right) ^{-1}
,\end{dmath}

\begin{dmath}
\delta={\frac {c}{\sqrt [3]{\rho}}}+d{\frac {1}{\sqrt [3]{\rho}}}
\left( 1+{\frac {d}{\sqrt [3]{\rho}}} \right) ^{-1}
,\end{dmath}

\begin{dmath}
{\it cf}=3/10\,{3}^{2/3} \left( {\pi }^{2} \right) ^{2/3}
,\end{dmath}

\begin{dmath}
A= 0.04918
,\end{dmath}

\begin{dmath}
B= 0.132
,\end{dmath}

\begin{dmath}
c= 0.2533
,\end{dmath}

\begin{dmath}
d= 0.349
.\end{dmath}



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