Published August 1, 1959
| Published
Journal Article
Open
Structure of the Vertex Function
Abstract
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.
Additional Information
© 1959 American Physical Society. (Received October 15, 1958; revised manuscript received April 6, 1959) We wish to thank Professor Julian Schwinger for suggesting such representations and for several discussions. One of us (W.G.) thanks the University of California Radiation Laboratory, Berkeley for its hospitality where this work was completed.Attached Files
Published - PhysRev.115.731.pdf
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PhysRev.115.731.pdf
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- CaltechAUTHORS:20161215-164608601
- NSF Postdoctoral Fellowship
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