Self-consistent Hartree-Fock calculation of exchange effects in a weakly inhomogeneous electron gas

D. J. Wallace Geldart; Mark Rasolt; Carl-Olof Almbladh

Self-consistent Hartree-Fock calculation of exchange effects in a weakly inhomogeneous electron gas

D. J. Wallace Geldart, Mark Rasolt, Carl-Olof Almbladh

Mathematical Physics

Research output: Contribution to journal › Article › peer-review

Abstract

An exact calculation is given for the function Bx(n) which enters the Hohenberg-Kohn-Sham expansion, in powers of ▿n(r), of the echange energy of an inhomogeneous eletron gas. The calculation is made for arbitrary inter-particle interaction. It is shown that the gradient expansion does not exist, in the case of Coulomb interaction, unless correlations are taken into account.

Original language	English
Pages (from-to)	243-246
Journal	Solid State Communications
Volume	16
Issue number	2
Publication status	Published - 1975

Subject classification (UKÄ)

Physical Sciences

Keywords

many-body theory
density functional theory
Electron gas

Cite this

@article{8ed07cd4ce0a4b71b315134a11eef91b,

title = "Self-consistent Hartree-Fock calculation of exchange effects in a weakly inhomogeneous electron gas",

abstract = "An exact calculation is given for the function Bx(n) which enters the Hohenberg-Kohn-Sham expansion, in powers of ▿n(r), of the echange energy of an inhomogeneous eletron gas. The calculation is made for arbitrary inter-particle interaction. It is shown that the gradient expansion does not exist, in the case of Coulomb interaction, unless correlations are taken into account.",

keywords = "many-body theory, density functional theory, Electron gas",

author = "Geldart, {D. J. Wallace} and Mark Rasolt and Carl-Olof Almbladh",

year = "1975",

language = "English",

volume = "16",

pages = "243--246",

journal = "Solid State Communications",

issn = "1879-2766",

publisher = "Pergamon Press Ltd.",

number = "2",

}

TY - JOUR

T1 - Self-consistent Hartree-Fock calculation of exchange effects in a weakly inhomogeneous electron gas

AU - Geldart, D. J. Wallace

AU - Rasolt, Mark

AU - Almbladh, Carl-Olof

PY - 1975

Y1 - 1975

N2 - An exact calculation is given for the function Bx(n) which enters the Hohenberg-Kohn-Sham expansion, in powers of ▿n(r), of the echange energy of an inhomogeneous eletron gas. The calculation is made for arbitrary inter-particle interaction. It is shown that the gradient expansion does not exist, in the case of Coulomb interaction, unless correlations are taken into account.

AB - An exact calculation is given for the function Bx(n) which enters the Hohenberg-Kohn-Sham expansion, in powers of ▿n(r), of the echange energy of an inhomogeneous eletron gas. The calculation is made for arbitrary inter-particle interaction. It is shown that the gradient expansion does not exist, in the case of Coulomb interaction, unless correlations are taken into account.

KW - many-body theory

KW - density functional theory

KW - Electron gas

M3 - Article

VL - 16

SP - 243

EP - 246

JO - Solid State Communications

JF - Solid State Communications

SN - 1879-2766

IS - 2

ER -

Self-consistent Hartree-Fock calculation of exchange effects in a weakly inhomogeneous electron gas

Abstract

Subject classification (UKÄ)

Keywords

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Cite this