332 citations · 1.9k across the 53 of their papers we have counts for
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physics.atom-ph2017★ 11 cited
state Positronium for Precision Physics: an Ultrafine Splitting at
Henry Lamm
An "ultrafine" splitting in positronium between the spin-singlet state and the spin-average of the spin-triplet states is shown to arise only at order . The QED predicti…
physics.atom-ph2017★ 2 cited
Some radiative corrections to the hyperfine splitting of true muonium: two-photon-exchange contributions
Yao Ji, Henry Lamm
We consider a set of radiative contributions from one-loop lepton vacuum polarization to the hyperfine splitting of true muonium. Improving previous results, we obtain values for t…