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Infrared divergence enforces a rearranged perturbation expansion I Scalar electrodynamics
It is shown that the ordinary perturbation expansion must, except in certain cases, be rearranged in order to carry out uniquely the infrared exponentiation in a translation- and gauge-invariant way. The uniqueness of the exponent of order alpha follows from requiring exact order-by-order agreement...
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Lenguaje: | eng |
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1977
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Acceso en línea: | http://cds.cern.ch/record/878588 |