Structure of the vertex function

Deser, Stanley ; Gilbert, Walter ; Sudarshan, E. C. G. (1959) Structure of the vertex function Physical Review, 115 (3). pp. 731-735. ISSN 0031-899X

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An integral representation as a function of invariants is found for the Fourier transform of the matrix element between the vacuum and a one-particle state of the retarded commutator of two currents. A special case is a spectral representation for the vertex as a function of momentum transfer. The threshold in this representation is lower than that found in the usual perturbation theory.

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Deposited On:27 Jul 2011 12:25
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