QED calculation of the nuclear magnetic shielding for hydrogen-like ions

TL;DR

This paper presents an ab initio QED calculation of nuclear magnetic shielding in hydrogen-like ions, incorporating effects like electron self-energy and vacuum polarization, advancing the precision of nuclear magnetic moment measurements.

Contribution

It introduces comprehensive QED calculations including previously unaccounted effects, improving theoretical accuracy for nuclear magnetic shielding in hydrogen-like ions.

Findings

QED corrections calculated to all orders in nuclear binding strength

Results enable high-precision nuclear magnetic dipole moment determination

Inclusion of nuclear magnetization distribution effects

Abstract

We report an ab initio calculation of the shielding of the nuclear magnetic moment by the bound electron in hydrogen-like ions. This investigation takes into account several effects that have not been calculated before (electron self-energy, vacuum polarization, nuclear magnetization distribution), thus bringing the theory to the point where further progress is impeded by the uncertainty due to nuclear-structure effects. The QED corrections are calculated to all orders in the nuclear binding strength parameter and, independently, to the leading order in the expansion in this parameter. The results obtained lay the ground for the high-precision determination of nuclear magnetic dipole moments from measurements of the g-factor of hydrogen-like ions.