Sum-rules of the response potential in the strongly-interacting limit of DFT

Sara Giarrusso, Paola Gori-Giorgi, Klaas J.H. Giesbertz*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review


The response part of the exchange-correlation potential of Kohn–Sham density functional theory plays a very important role, for example for the calculation of accurate band gaps and excitation energies. Here we analyze this part of the potential in the limit of infinite interaction in density functional theory, showing that in the one-dimensional case it satisfies a very simple sum rule.

Original languageEnglish
Article number186
Pages (from-to)1-6
Number of pages6
JournalEuropean Physical Journal B
Early online date3 Aug 2018
Publication statusPublished - Aug 2018


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