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Two loop scalar integral

  • Thread starter Milsomonk
  • Start date
Problem Statement
Hi all,
I am trying to calculate a two loop scalar integral for a project at university. I'm not entirely convinced I have set the problem up correctly so I am looking for a wise person to tell me if I've made any fundamental errors so far. Also if anyone is aware of any good literature for getting started with two loop Feynman integrals I would be very appreciative. Thanks in advance :)
Relevant Equations
Internal propagators:

P_1 = \dfrac{i}{k^2 - m_1^2} $$\\

P_2 = \dfrac{i}{(q-k)^2 - m_2^2} $$\\

P_3 = \dfrac{i}{q^2 - m_3^2} $$\\

king vitamin

Science Advisor
Gold Member
It looks good so far. Are you stuck for any reason? At the point where the picture cuts off, the procedure to continue seems pretty straight-forward (the integrals over ##k## and ##q## can be done after some algebra).
Hi, thanks for your reply. I was stuck on completing the square to shift the loop momenta, the way I was doing it wasn't working but eventually I did manage to figure it out. I wasn't sure if the problem was that I had made a basic error in setting up the loop integral but it seems that I had done it correctly, thanks again for your response :)

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