Rci-Q: an improved QED correction model for the GRASP2018 package
Karol Kozio{\l}
TL;DR
The paper introduces Rci-Q, an extension to GRASP2018, enhancing QED correction modeling with new parameters and additional effects like finite nucleus size and vacuum polarization.
Contribution
It presents a new extension to the GRASP2018 package that improves quantum-electrodynamics correction estimations with updated models and parameters.
Findings
Incorporates new fitting prefactors for radiative potential.
Includes correction for finite nucleus size effects.
Implements Wichmann-Kroll vacuum polarization component.
Abstract
The Rci-Q package is an extension to the GRASP2018 suite, improving the model of estimating the quantum-electrodynamics corrections to the energy levels. The Flambaum-Ginges radiative potential method is used to estimate the leading self-energy correction to electron energy in many electron atoms. The new fitting prefactors to parameterize radiative potential are presented. The correction to self-energy originating from finite nucleus size is included. The Wichmann-Kroll part of the vacuum polarization potential is also implemented.
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