Complex-scaled ab initio QED approach to autoionizing states

• URL: http://arxiv.org/abs/2210.00773v1
• Date: Mon, 3 Oct 2022 09:11:26 GMT
• Title: Complex-scaled ab initio QED approach to autoionizing states
• Authors: V. A. Zaytsev, A. V. Malyshev, V. M. Shabaev
• Abstract summary: Ab initio method based on a complex-scaling approach and aimed at a rigorous QED description of autoionizing states is worked out. The autoionizing-state binding energies are treated nonperturbatively in $alpha Z$ and include all the many-electron QED contributions up to the second order.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Ab initio method based on a complex-scaling approach and aimed at a rigorous QED description of autoionizing states is worked out. The autoionizing-state binding energies are treated nonperturbatively in $\alpha Z$ and include all the many-electron QED contributions up to the second order. The higher-order electron correlation, nuclear recoil, and nuclear polarization effects are taken into account as well. The developed formalism is demonstrated on the $LL$ resonances in heliumlike argon and uranium. The most accurate theoretical predictions for the binding energies are obtained.

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