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17.1.1 S: Slater-Dirac exchange energy


$\displaystyle K$ $\textstyle =$ $\displaystyle -{\textstyle\frac{3}{8}} (3/\pi)^\frac13 \left((\rho+\hat \rho)^\frac43+(\rho-\hat \rho)^\frac43\right)$ (6)


P.J. Knowles and H.-J. Werner
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Mar 8, 2000