====== TTP98-35 Relativistic Positronium Equation ======
 
 
   <hidden TTP98-35  Relativistic Positronium Equation > The recoil corrections to the energy levels of leptonium are calculated 
 to the order $\alpha^6$ and $\alpha^6 \log\alpha$ for all states
 except those having hyperfine mixing. A correction to the hyperfine operator
 is derived in which the potential appears in the denominator.
 </hidden>
|**Hartmut Pilkuhn**  | 
| {{preprints:1998:ttp98-35.pdf|PDF}} {{preprints:1998:ttp98-35.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9809533|arXiv]]   |
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