3 papers
physics.atom-ph1996
Eight-component differential equation for leptonium
R. Haeckl, V. Hund, H. Pilkuhn
It is shown that the potential for lepton-antilepton bound states (leptonium) is the Fourier transform of the first Born approximation to the QED scattering amplitude in an 8-compo…
atom-ph1996
Hyperfine interactions between electrons
R. Haeckl, H. Pilkuhn
The relativistic Breit Hamiltonian between electrons is transformed into an effective vector potential for the th electron, having the structure of a re…
hep-ph1996
Binary Boosts
R. Haeckl, V. Hund, H. Pilkuhn
The relativistic motion of an isolated two--body system (bound or unbound) of given lab energy in QED is separated into cms motion and relative motion. The relative motion…