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Causal amplitudes and the Yang-Feldman formalism

Published online by Cambridge University Press:  24 October 2008

J. C. Polkinghorne
J. C. Polkinghorne
Affiliation:
Tait Institute of Mathematical Physics, University of Edinburgh
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Abstract

The Yang-Feldman formalism vising the Feynman-like Green's functions is set up. The corresponding free fields have non-trivial commutation relations and contain information about the scattering. S-matrix elements are simply the matrix elements of anti-normal products of the field φF′(x). These are evaluated, and they give directly expressions used in the theory of causality and dispersion relations. It is possible to formulate field theory in a form in which the fields obey free field equations and the effects of interaction are contained in their commutation relations.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 53 , Issue 4 , October 1957 , pp. 843 - 847
Copyright
Copyright © Cambridge Philosophical Society 1957

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References

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