Efficient density-fitted explicitly correlated dispersion and exchange dispersion energies

Monika Kodrycka, Konrad Patkowski

The leading-order dispersion and exchange-dispersion terms in symmetry-adapted perturbation theory (SAPT), $E_{\mathrm{disp}}^{(20)}$ and $E_{\mathrm{exch}-\mathrm{disp}}^{(20)}$, suffer from slow co…