Lehmann-Symanzik-Zimmermann Formalism in a Model Field Theory
- 1 January 1966
- journal article
- research article
- Published by AIP Publishing in Journal of Mathematical Physics
- Vol. 7 (1) , 159-162
- https://doi.org/10.1063/1.1704803
Abstract
The Lehmann‐Symanzik‐Zimmermann (LSZ) formalism is used as a calculational method to obtain an equation for the determination of the V + N potential energy in a slightly modified Lee model. This approach to the problem is compared with the standard eigenvalue technique and the dispersion theory treatment. It is found that an exact solution to the VN − 2N θ sector can be obtained with one algebraic equation and this evidence gives additional support to the desirability of the LSZ method as a calculational tool for the model.Keywords
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