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arXiv · 2207.04989

Ab initio QED calculations in diatomic quasimolecules

A. N. Artemyev·A. Surzhykov·V. A. Yerokhin
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Abstract

We present a theoretical approach for ab initio calculations of the one-loop QED corrections to energy levels of heavy diatomic quasimolecules. This approach is based on the partial-wave expansion of the molecular wave and Green functions in the basis of monopole solutions, written in spherical coordinates. By using so generated molecular functions we employed the existing atomic-physics techniques to evaluate the self-energy and vacuum-polarization corrections. In order to illustrate the application of our method, we perform detailed calculations of the Dirac energy and QED corrections for the 1$\sigma_g$ ground state of homonuclear U$_2^{183+}$ as well as heteronuclear U-Pb$^{173+}$ and Bi-Au$^{161+}$ quasimolecules.

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A. N. Artemyev, A. Surzhykov, V. A. Yerokhin. 2022-07-11. Ab initio QED calculations in diatomic quasimolecules. https://doi.org/10.1103/physreva.106.012813

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