1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Number of weighted vacuum Feynman diagrams

  1. Jun 5, 2012 #1
    I didn't know where to put this, because it isn't a homework or coursework I have to do but just a thing I'm trying to understand. Anyway, I have attached the problem as an image.

    We have a scalar quartic lagrangian in d dimensions. It says that the number of vacuum Feynman diagrams, at a given order λ^k, weighted by their statistical factor, should depend on the number of dimension d.
    If understand well what the "statistical factor" is, i.e. the number of ways to join the vertices of a given diagram, I can't figure out how it could be dependent on the number of space-time dimensions d. Any suggestions?

    Thank you and sorry for my English
     

    Attached Files:

  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Number of weighted vacuum Feynman diagrams
  1. Feynman diagram (Replies: 2)

  2. Feynman Diagram (Replies: 7)

  3. Feynman Diagrams (Replies: 0)

  4. Feynman Diagrams! (Replies: 7)

  5. Feynman diagram (Replies: 3)

Loading...