Exchange and correlation kernels at the resonance frequency: Implications for excitation energies in density-functional theory

X. Gonze, M. Scheffler

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Specific matrix elements of exchange and correlation kernels in time-dependent density-functional theory are computed. The knowledge of these matrix elements not only constrains approximate time-dependent functionals. It also allows one to link different practical approaches to excited states, based either on density-functional theory or on many-body perturbation theory, despite the approximations that have been performed to derive them.

Original languageEnglish
Pages (from-to)4416-4419
Number of pages4
JournalPhysical Review Letters
Volume82
Issue number22
DOIs
Publication statusPublished - 1999
Externally publishedYes

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