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An explicit construction of a complete coherent-state representation of a charged relativistic boson field is given. We apply the results to the emission of soft, charged, massless bosons in a scattering process. We obtain a closed expression for the total transition probability for the source to create radiation in a given energy interval and in the case of no self-interaction among the bosons.
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Bo-Sture Skagerstam (1979) studied this question.
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