Does the derivative of the energy density functional provide a proper quantitative formulation of electronegativity?
arXiv:1209.6353
Abstract
It is pointed out that the derivative of the energy density functional does not provide a valid local electronegativity measure, in spite of its appealing property of becoming constant for ground-state equilibrium systems.
unpublished sec.VI of arXiv:1107.4249v3 made into a separate paper