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I'm studying QFT from Le Bellac's book, but I can't understand very well his proof for the generator of proper vertices; is there somevertices. Can someone give a more readable and/or understandable proof around, in some book or lecture note?
I'm studying QFT from Le Bellac's book, but I can't understand very well his proof for the generator of proper vertices; is there some more readable and/or understandable proof around, in some book or lecture note?
I'm studying QFT from Le Bellac's book, but I can't understand very well his proof for the generator of proper vertices. Can someone give a more readable and/or understandable proof?
How to prove that the generator of proper vertices is the Legendre transform of $W(j) = \log \frac{Z[j]}{Z[0]}$
I'm studying QFT from Le Bellac's book, but I can't understand very well his proof for the generator of proper vertices; is there some more readable and/or understandable proof around, in some book or lecture note?
