his.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Exchange-correlation kernel in time-dependent density functional theory derived from many-body theory
University of Skövde, School of Life Sciences.ORCID iD: 0000-0002-7023-4043
Research Institute for Computational Sciences, AIST Tsukuba Central 2, Umezono 1-1-1, Tsukuba Ibaraki 305-8568, Japan.
2004 (English)In: International Journal of Modern Physics B, ISSN 0217-9792, Vol. 18, no 7, 1055-1067 p.Article in journal (Refereed) Published
Abstract [en]

We derive a simplified Bethe–Salpeter equation for calculating optical absorption based on the assumption of a local electron–hole interaction. The original four-point equation for the kernel is reduced to a two-point one. A connection to the exchange–correlation kernel in time-dependent density functional theory can be established. The resulting fxc is found to be -W/2 where W contains only the short-range (local) part of the Coulomb screened interaction. This simple approximation was successfully applied to optical absorption spectra of some excitonic crystals, reproducing not only the continuum excitons but also the bound ones.

Place, publisher, year, edition, pages
World Scientific, 2004. Vol. 18, no 7, 1055-1067 p.
Keyword [en]
Bethe-Salpeter equation (BSE), Excitonic effects, Optical absorption, Time-dependent density functional theory (TDDFT)
Research subject
Natural sciences
Identifiers
URN: urn:nbn:se:his:diva-1988DOI: 10.1142/S0217979204024537ISI: 000222288100009Scopus ID: 2-s2.0-3042563865OAI: oai:DiVA.org:his-1988DiVA: diva2:32264
Available from: 2007-07-02 Created: 2007-07-02 Last updated: 2016-04-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Karlsson, Krister
By organisation
School of Life Sciences
In the same journal
International Journal of Modern Physics B

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 748 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf