Complex-scaled ab initio QED approach to autoionizing states

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.

6 pages, 3 figures

References in corpus (11)

• Nuclear deformation effect on the binding energies in heavy ions
• Relativistic recoil, electron-correlation, and QED effects on the 2p_j-2s transition energies in Li-like ions
• Photoionization of ions with synchrotron radiation: From ions in space to atoms in cages
• QED calculation of the ground-state energy of berylliumlike ions
• Relativistic extension of the complex scaling method
• QED calculations of energy levels of helium-like ions with $5\le Z\le 30$
• Molecular Auger Decay Rates from Complex-Variable Coupled-Cluster Theory
• Supercritical Dirac resonance parameters from extrapolated analytic continuation methods
• Ground-state ionization energies of boronlike ions
• Complex scaled relativistic configuration-interaction study of the $LL$ resonances in helium-like ions: from Boron to Argon
• Ab initio calculations of energy levels in Be-like xenon: strong interference between electron-correlation and QED effects

Cited by in corpus (2)

• Double-$K$-hole resonances in single photoionization of He-like B${}^{3+}$ ions
• Parts-per-million-accurate determination of the K$\alpha$ photoionization resonance of Be-like oxygen with resolution of its ${}^{16}$O-${}^{18}$O isotopic shift