Publication
Title
Towards an exact orbital-free single-particle kinetic energy density for the inhomogeneous electron liquid in the Be atom
Author
Abstract
Holas and March [Phys. Rev. A51, 2040 (1995)] wrote the gradient of the one-body potential V(r) in terms of low-order derivatives of the idempotent Dirac density matrix built from a single Slater determinant of Kohn-Sham orbitals. Here, this is first combined with the study of Dawson and March [J. Chem. Phys. 81, 5850 (1984)] to express the single-particle kinetic energy density of the Be atom ground-state in terms of both the electron density n(r) and potential V(r). While this is the more compact formulation, we then, by removing V(r), demonstrate that the ratio t(r)/n(r) depends, though non-locally, only on the single variable n0(r)/n(r), no high-order gradients entering for the spherical Be atom.
Language
English
Source (journal)
Physics and chemistry of liquids. - London
Publication
London : 2011
ISSN
0031-9104
Volume/pages
49:5(2011), p. 693-697
ISI
000299701600013
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 18.04.2012
Last edited 08.11.2017
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