Open Access

Table 1

Contributions to the f -sum rule and static polarizability αpol(0) coming from bound and continuum states.

States f-sum αpol(0) (bohr3) αpol(0)[%]
Discrete 0.5650041506 3.66325789028 81.4057308951
Continuum 0.4349958493 0.83674210969 18.5942691042
All 0.9999999999 4.49999999997 99.9999999993

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