QED nuclear recoil effect in helium isotope shift
Year: 2025
Type: article
Abstract: We present a detailed investigation of the leading-order $mα^5$ QED correction with inclusion of the finite-nuclear-mass effects. Previously, this correction had been calculated within an expansion in the electron-nucleus mass ratio $m/M$ up to the first order. In this work, we derive formulas for the $mα^5$ QED contribution that are valid up to the second order in $m/M$, and perform its calculation for the $^3$He$-$$^4$He isotope shift, leading to an improved determination of the nuclear charge-radius difference.
Source: MPG.PuRe (Max Planck Society)
Authors: Pachucki, Krzysztof, Patkóš, Vojtěch, Yerokhin, Vladimir A.
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7109039229