Nearsightedness in the Presence of Long-range Electron-Electron
Interactions
Walter Kohn, University of California at Santa Barbara, USA
e-mail: hicks@mail.physics.ucsb.edu
Jeudi, 12 novembre 2009, Amphithéatre Astier,
Nearsightedness is, in the first place, a property of many (N > 1), degenerate
or nondegenerate, non-interacting Fermions. After a review I shall show how,
by means of density functional theory, (DFT), the concept can be extended to
charged fermions, such as electrons, as long as the exchange-correlation
functional is not long range. This procedure leads to almost-linear
computational scaling in N.