New representation of the two-loop crossed vertex function

  title={New representation of the two-loop crossed vertex function},
  author={Alexander Frink and Ulrich Kilian and Dirk Kreimer},
We calculate the two-loop vertex function for the crossed topology, and for arbitrary masses and external momenta. We derive a double integral representation, suitable for a numerical evaluation by a Gaussian quadrature. Real and imaginary parts of the diagram can be calculated separately. PACS numbers: 02.70.+d, 12.38.Bx, 11.20.Dj 1 email: 


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