= Krzysztof Pachucki
{c}
{tag=Physicist}
A theoretical <atomic physicist> who coauthored a precision review of the <Lamb shift>. The analysis assembles distinct corrections to hydrogenic <energy levels>, allowing high-resolution <spectroscopy> to be compared with <quantum electrodynamics>. Separating nuclear-size contributions from purely electronic corrections is essential when extracting a nuclear radius.<Theory of the Lamb shift in hydrogen and light hydrogen-like ions by Vladimir Yerokhin and others>[Abstract and treatment of radiative, recoil and nuclear-size contributions]{ref}
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