====== TTP04-14 Multiloop Tadpoles ======
 
 
<hidden TTP04-14  Multiloop Tadpoles > We present a semi-numerical approach which allows the calculation of
 four-loop tadpole diagrams. The method is introduced by presenting the
 results for a scalar four-loop diagram. Finally, the application
 of the method to the calculation of a physical quantity like the four-loop
 vacuum polarization in QCD is discussed.
 </hidden>
|**M. Faisst, K.G. Chetyrkin, Johann H. Kühn**  | 
|**  Nucl.Phys.Proc.Suppl.  135 307-310 2004  **  |
| {{preprints:2004:ttp04-14.pdf|PDF}} {{preprints:2004:ttp04-14.ps|PostScript}}   |
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