Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Is it a misprint in QFT book of Peskin?

  1. Jan 14, 2013 #1
    In QFT book of Peskin&Schroeder writing(page 252,section 7.5Renormalization of electric Charge):

    Where [itex]\epsilon[/itex] is 4-d(d is dim of space-time)

    But I think that it is misprint,because bare charge>> observed charge e,then the right formular would be (e[itex]^{2}[/itex]-e[itex]^{2}_{0}[/itex])/e[itex]^{2}[/itex]=.........
  2. jcsd
  3. Jan 14, 2013 #2
    I have found out the errata and that is not misprint.Then I do not understand the formula,because (e^2-e0^2) is the same order with e0^2 then (e^2-e0^2)/e0^2 can not be divergent as Peskin(~2*anpha/3*pi*epsilon)?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - misprint book Peskin Date
I A request for a book(s) Jan 25, 2018
I A question about Zee's book QFT in a nutshell Dec 9, 2017
I New book on the foundations of quantum mechanics Aug 29, 2017
Ryder QFT 2nd ed. page 341 misprint? Jul 7, 2011