Fundamental constants and tests of theory in Rydberg states of hydrogen-like ions
arXiv:0901.4950 · doi:10.1103/PhysRevLett.100.160404
Abstract
Comparison of precision frequency measurements to quantum electrodynamics (QED) predictions for Rydberg states of hydrogen-like ions can yield information on values of fundamental constants and test theory. With the results of a calculation of a key QED contribution reported here, the uncertainty in the theory of the energy levels is reduced to a level where such a comparison can yield an improved value of the Rydberg constant.
4 pages, RevTeX