Unitarity Condition and Anomalous Vertex Functions
- 15 April 1962
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 126 (2) , 852-860
- https://doi.org/10.1103/physrev.126.852
Abstract
An intuitive prescription is given in perturbation theory for the calculation of the absorptive part of a vertex function in the anomalous region from the unitarity condition. The relation of the present method to other known methods is also discussed.Keywords
This publication has 5 references indexed in Scilit:
- On analytic properties of vertex parts in quantum field theoryPublished by Elsevier ,2002
- Time-Ordered Green's Functions and Perturbation TheoryPhysical Review B, 1961
- Anomalous thresholds in dispersion theory - IIl Nuovo Cimento (1869-1876), 1960
- Singularities and Discontinuities of Feynman AmplitudesJournal of Mathematical Physics, 1960
- Unitarity Condition Below Physical Thresholds in the Normal and Anomalous CasesPhysical Review Letters, 1960