Abstract
By slightly changing the quantum postulate of Peierls’ method of quantization it is shown that it is possible to obtain commutation rules for half-integer spin fields without introducing « extra » operators. To illustrate other aspects of the postulate, trilmear commutation rules are deduced. Commutation rules for multicomponent Klein-Gordon fields for arbitrary spin are also obtained, and from these the usual commutation rules for arbitrary spin fields are obtained by means of projection operators.
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