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Phi^3 theory in 5 dimensions

  1. Nov 20, 2013 #1
    OK, I think I am missing something very basic...

    When regularizing phi^3 theory in six dimensions, Srednicki comes to eq 14.30, which shows that the 1-loop contribution to the propagator diverges (the gamma function has a pole). This is good.

    OK. Now let d=5 (or epsilon=1). Actually, go ahead and let d=1001 or any odd number. Then 14.30 is finite, which definitely seems wrong. "Superficially," the diagram should diverge...

    What am I screwing up?
  2. jcsd
  3. Nov 20, 2013 #2
    Your question would be easier to answer if you actually told us what's in equation 14.3.
  4. Nov 21, 2013 #3


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  5. Nov 21, 2013 #4
    @dauto, how is 14.3 going to help resolve equation 14.30?
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