Analytic Property of Three-Body Unitarity Integral
- 7 June 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 138 (5B) , B1222-B1229
- https://doi.org/10.1103/physrev.138.b1222
Abstract
Analytic properties of the three-body unitarity integral are studied for the production amplitude corresponding to one-particle-exchange diagrams. The condition under which the absorptive part has singularities is discussed. For a simple degenerate case, it is shown that the singularity curve can be represented by an explicit elementary function. It is shown further that this singularity curve is identical to that from the conventional Landau-Bjorken analysis.Keywords
This publication has 4 references indexed in Scilit:
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- Acnodes and Cusps on Landau CurvesJournal of Mathematical Physics, 1961
- Singularities and Discontinuities of Feynman AmplitudesJournal of Mathematical Physics, 1960
- Analytic Properties of Transition Amplitudes in Perturbation TheoryPhysical Review B, 1959