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## F.2 Field Theory Calculation 

## F.2.1 Bremsstrahlung Radiation 

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We wish to calculate the field theory analog of the previous classical calcula- tions. Following Peskin pgs. 182-183 [251], consider the diagrams in Fig. F.2 contributing to bremsstrahlung radiation. 

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Then, taking M$_{0}$ to denote the part of the amplitude that comes from the 

