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arXiv · 2610.03901

Electrical and optical dipole polarizabilities of two lowest triplet states of the beryllium atom

Tymoteusz Mrozek·Krzysztof Strasburger
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Abstract

High-accuracy static and dynamic polarizabilities of the $2^3P_u$ and $^{3}S_{g}$ states of the neutral beryllium atom are reported. The calculations employed explicitly correlated Gaussian (ECG) basis sets, and first-order wave functions were obtained by minimization of the Hylleraas functional. The final basis sets used for the response-property calculations contained c.a. 7000-8000 functions, depending on the polarizability component and the chosen symmetry. The results cover frequencies from the static limit, \(ω= 0\), up to the third resonance for the \(2^{3}P_{u}\) state and up to the second resonance for the \(3^{3}S_{g}\) state. To the best of our knowledge, these are the first calculations of dynamic and static polarizabilities for these excited states of the beryllium atom using explicitly correlated basis sets.

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Tymoteusz Mrozek, Krzysztof Strasburger. 2026-10-02. Electrical and optical dipole polarizabilities of two lowest triplet states of the beryllium atom. https://arxiv.org/abs/2610.03901

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