Title
|
|
|
|
Differential equation for the determination of a first-degree homogeneous noninteracting kinetic-energy density functional for two-level systems
|
|
Author
|
|
|
|
|
|
Abstract
|
|
|
|
A differential equation from which the noninteracting kinetic energy density of one-dimensional two-particle (or two-level spherically symmetric closed-shell) systems can be obtained in terms of the ground-state density is derived. In this equation, though non-linear, the kinetic energy density appears only through its various spatial derivatives. With a physically consistent generalization of the normalization constraint, the solution of the differential equation as a functional of the density,gives a first-degree homogeneous two-particle noninteracting kinetic-energy density functional, which can be considered as the second element of a series of first-degree homogeneous density functionals that give the exact noninteracting kinetic energy for densities of a given particle number, the first of which is the Weizsacker functional. (C) 2002 Elsevier Science B.V. All rights reserved. |
|
|
Language
|
|
|
|
English
|
|
Source (journal)
|
|
|
|
Physics letters : A. - Amsterdam, 1967, currens
|
|
Publication
|
|
|
|
Amsterdam
:
North-Holland
,
2002
|
|
ISSN
|
|
|
|
0375-9601
|
|
DOI
|
|
|
|
10.1016/S0375-9601(02)01141-6
|
|
Volume/pages
|
|
|
|
302
:2-3
(2002)
, p. 55-58
|
|
ISI
|
|
|
|
000178359500001
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
Full text (publisher's version - intranet only)
|
|
|
|
|
|