Abstract
The connection between the Nishijima-Zimmermann method and the Ekstein method of treating collision processes between composite particles in quantum field theory is given. Starting from the point of view that the field is a local observable, the "asymptotic conditions" are proved and generalized.
- Received 11 June 1958
DOI:https://doi.org/10.1103/PhysRev.112.669
©1958 American Physical Society