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Feynman Diagrams 
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#1
Mar612, 05:43 AM

P: 75

1. The problem statement, all variables and given/known data
Draw the Feynman diagram vertex corresponding to the interaction L_{int} = eA^{μ}J_{μ}, where A^{μ} is the electromagnetic field and e is the coupling constant. Draw all the Feynman diagrams in quantum electrodynamics to O(e2) describing the processes: (i) e+e > e+e, (ii) e+e > μ+μ (iii)γ e > γ e 2. Relevant equations Any ideas on how i should approach this question? 


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