title: Functional derivative of the kinetic energy functional for spherically symmetric systems.
abstract: Ensemble non-interacting kinetic energy functional is constructed for spherically symmetric systems. The differential virial theorem is derived for the ensemble. A first-order differential equation for the functional derivative of the ensemble non-interacting kinetic energy functional and the ensemble Pauli potential is presented. This equation can be solved and a special case of the solution provides the original non-interacting kinetic energy of the density functional theory.
authors.affiliation: Department of Theoretical Physics, University of Debrecen, H-4010 Debrecen, Hungary. anagy@madget.atomki.hu
authors.forename: Á
authors.initials: Á
authors.lastname: Nagy