|
Title
|
|
|
|
Comment on "Kinetic energy as a density functional"
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| In a recent paper, Nesbet [Phys. Rev. A 65, 010502(R) (2001)] has proposed dropping "the widespread but unjustified assumption that the existence of a ground-state density functional for the kinetic energy, T-s[rho], of an N-electron system implies the existence of a density-functional derivative, deltaT(s)[rho]/deltarho(r), equivalent to a local potential function," because, according to his arguments, this derivative "has the mathematical character of a linear operator that acts on orbital wave functions." Our Comment demonstrates that the statement called by Nesbet an "unjustified assumption" happens, in fact, to be a rigorously proven theorem. Therefore, his previous conclusions stemming from his different view of this derivative, which undermined the foundations of density-functional theory, can be discounted. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Physical review : A : atomic, molecular and optical physics. - Lancaster, Pa, 1990 - 2015
| |
|
Publication
|
|
|
|
Lancaster, Pa
:
2002
| |
|
ISSN
|
|
|
|
1094-1622
[online]
1050-2947
[print]
| |
|
DOI
|
|
|
|
10.1103/PHYSREVA.66.066501
| |
|
Volume/pages
|
|
|
|
66
:6
(2002)
, 3 p.
| |
|
Article Reference
|
|
|
|
066501
| |
|
ISI
|
|
|
|
000180656800126
| |
|
Medium
|
|
|
|
E-only publicatie
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|