Abstract

A model of divergence-free S-matrix is obtained by working with Dirac's instant form of dynamics. In this form the Poincaregroup generators G/sub alpha / are given in such a way that the energy P/sub o/ and the boost operators K/sub i/ contain essential, dynamical terms, whereas the momentum P/sub i/ and the angular momentum J/sub i/consist only of trivial kinematical terms. (LBS)

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