====== TTP96-50 Eight-component differential equation for leptonium ======
 
 
   <hidden TTP96-50  Eight-component differential equation for leptonium > 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-component 
 equation, while 16-component equations are excluded. 
 The Fourier transform is exact at all {\sl cms} energies 
 $ - \infty < E < \infty$; the resulting atomic spectrum is 
 explicitly CPT-invariant.
 
 </hidden>
|**R. Haeckl, V. Hund, H. Pilkuhn**  | 
| {{preprints:1996:ttp96-50.pdf|PDF}} {{preprints:1996:ttp96-50.ps|PostScript}} [[http://arxiv.org/abs/physics/9611004|arXiv]]   |
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