Electron response in the Rutgers-Chalmers van der Waals Density ...

vdW-DF Presention Useful! Response Picture TheoryvdW-DF nonlocal correlations ↔ plasmon shiftsExpansion for two fragments A and B:E nlc = Tr{ln(1 − [χ ACF V ] AB [χ ACF V ] BA )}When χ ACF is intra-fragment and V AB mediates ω λcqcoupling:vdW-DF counts zero-point energy shifts. [fromexciton argument, Mahan, JCP 43, 1569 (65)].Also, vdW-DF second-order expansion∫ ∫Ec nl = n(r)φ[n, ∇](r, r ′ )n(r)r r ′φ[n, ∇n] : {D, δ} ↔ {q 0 [n](r), q 0 [n](r ′ )}permits nontrivial universal-kernel evaluation.Per Hyldgaard