Abstract
The S matrix is the central object of interest in field theory because it expresses the observed interactions between particles. The Chapter 13 definition of the S matrix does not provide a convenient framework for further analysis of its properties. However, we now show that the S matrix has a simple representation in terms of time-ordered correlation functions. This representation is convenient, and it allows, e.g., the construction of perturbation series, the decomposition into connected components, and the study of momentum space analyticity.
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© 1981 Springer-Verlag New York Inc.
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Glimm, J., Jaffe, A. (1981). Scattering Theory: Time-Independent Methods. In: Quantum Physics. Springer, New York, NY. https://doi.org/10.1007/978-1-4684-0121-9_14
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DOI: https://doi.org/10.1007/978-1-4684-0121-9_14
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-90562-4
Online ISBN: 978-1-4684-0121-9
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