Asymmetry of the natural line profile for the hydrogen atom
Abstract
The asymmetry of the natural line profile for transitions in hydrogen-like atoms is evaluated within a QED framework. For the Lyman-alpha 1s-2p absorption transition in neutral hydrogen this asymmetry results in an additional energy shift of 2.929856 Hz. For the 2s1/2-2p3/2 transition it amounts to -1.512674 Hz. As a new feature this correction turns out to be process dependent. The quoted numbers refer to the Compton-scattering process.
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