====== TTP05-09 Corrections of order $\beta_0^3\alpha_s^3$ to the energy levels and wave function ======
 
 
<hidden TTP05-09  Corrections of order $\beta_0^3\alpha_s^3$ to the energy levels and wave function >   One of the most important tasks of a future linear collider is the
   precise measurement of the threshold production cross section of top
   quark pairs. In order to match the expected experimental precision
   it is necessary to perform theoretical predictions which include
   corrections up to third order in perturbation theory. In this contribution
   we report about the corrections of order $\beta_0^3\alpha_s^3$ to the
   heavy quark spectrum and wave function. Physical applications both for
   the top and bottom quark system are discussed.
 </hidden>
|**Matthias Steinhauser**  | 
| {{preprints:2005:ttp05-09.pdf|PDF}} {{preprints:2005:ttp05-09.ps|PostScript}}   |
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