Thank you for your answers!
Unfortunately, I do not have access to the book Alan mentioned (I
think of buying it, saw it before when searching for the subject).
Nevertheless, thank you for your PDF-file, I will have a look into it.
The example from Ondřej is looking very similar to what I am looking
for. However, I noticed that the gamma matrices are implemented by a
specific representation. In my opinion it would be better to treat
them fully symbolically in order to gain results for dimensional
regularized calculations, which alter the Clifford-identity to the
following:
\gamma^\mu \gamma^\nu + \gamma^\nu \gamma^\mu = (2-\epsilon) g^{\mu
\nu}
I seriously think of implementing this functionality.
Christopher
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