A generalization of Haag's theorem
An analogue of Haag's theorem is proved for the case of a neutral scalar field. The vacuum expectation apparatus developed by A. Wightman and G. Källen is used lor the proof.
Citation Example: Hachok V. P. A generalization of Haag's theorem // Ukr. Mat. Zh. - 1961. - 13, № 1. - pp. 22-27.