Journal
JOURNAL OF MATHEMATICAL PHYSICS
Volume 41, Issue 7, Pages 4437-4451Publisher
AMER INST PHYSICS
DOI: 10.1063/1.533352
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A crucial element of scattering theory and the LSZ reduction formula is the assumption that the coupling vanishes at large times. This is known not to hold for the theories of the Standard Model and in general such asymptotic dynamics is not well understood. We give a description of asymptotic dynamics in field theories which incorporates the important features of weak convergence and physical boundary conditions. Applications to theories with three and four point interactions are presented and the results are shown to be completely consistent with the results of perturbation theory. (C) 2000 American Institute of Physics. [S0022-2488(00)02907-8].
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