Hi all: I am interesting with vdw-DF and its implementation in siesta. I have a simple question:
As mentioned by M. Dion, the nonlocal correlation energy contribution is: E = 1/2 int int dr dr' n(r) n(r') phi(r,r') where n(r) is charge density. Is n(r) charge density of valence charge density or all-electron charge density? thanks! Yun-Peng -- *Yunpeng Peter Wang*
