Abstract
We generalize some notions of probability theory and theory of group representations to field theory and to states on the Borchers algebraS. It is shown that every field (relativistic and Euclidean, ...) can be decomposed into a countable number of prime fields and an infinitely divisible field. In terms of states this means that every state onS is a product of an infinitely divisible state and a countable number of prime states, and in this formulation it applies equally well to correlation functions of statistical mechanics and to moments of linear stochastic processes overS orD. Necessary and sufficient conditions for infinitely divisible states are given. It is shown that the fields of the ø 42 -theory are either prime or contain prime factors. Our results reduce the classification problem of Wightman and Euclidean fields to that of prime fields and infinitely divisible fields. It is pointed out that prime fields are relevant for a nontrivial scattering theory.
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Communicated by A. S. Wightman
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Hegerfeldt, G.C. Prime field decompositions and infinitely divisible states on Borchers' tensor algebra. Commun.Math. Phys. 45, 137–151 (1975). https://doi.org/10.1007/BF01629244
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DOI: https://doi.org/10.1007/BF01629244