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Abstract

In this paper the LEHMANN-SYMANZIK-ZIMMERMANN (L. S. Z.) structure of the {n; 3} sector of the LEE model is investigated and some general features of the {n; k} sector are presented. It is shown that the {n; k} sector with kn is entirely determined by the solutions of k singular integral equations. In the case of the sector {k — l; k} with l integer, 1 ≥ lk – 1, kl singular integral equations must be solved in order to determine all physical quantities.