Summary
On the ground of quite general hypotheses, as Lorentz invariance of the theory and causality, and restricting oneself to the case in which no zero-mass particles occur, one proves that it is possible to define in the ordinary field theory « asymptotic states» according toHaag. The proof is mainly based on the integral representations of the generalized singular functions.
Riassunto
Sulla base di ipotesi molto generali, come Lorentz invarianza della teoria e causalità e con la restrizione al caso dell’assenza di particelle di massa nulla, si dimostra che è possibile definire nell’ordinaria teoria di campo « stati asintotici » secondoHaag. La dimostrazione si basa in gran parte sulle rappresentazioni integrali delle funzioni singolari generalizzate.
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References
K. Nishijima:Progr. Theor. Phys.,10, 549 (1953);12, 279 (1954);13, 305 (1955);Phys. Rev.,111, 995 (1958);H. Ekstein:Nuovo Cimento,4, 1017 (1956);R. Haag (preprint and Varenna lecture notes). See alsoH. Lehmann, K. Symanzik andW. Zimmermann:Nuovo Cimento,1, 205 (1955).
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Cfr.e.g. Higher Transcendental Functions, vol. 2 (New York, 1953), p. 101.
Cfr.K.W. A. Wightman andD. Hall:Phys. Rev.,99, 674 (1955).
Cfr. note (11).
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Dell’Antonio, G.F., Gulmanelli, P. Asymptotic conditions in quantum field theories. Nuovo Cim 12, 38–53 (1959). https://doi.org/10.1007/BF02747805
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DOI: https://doi.org/10.1007/BF02747805