%0 Journal Article %T Extension of von Neumann's uniqueness theorem to the theories with non-physical particles %A K. V. Antipin %A M. N. Mnatsakanova %A Yu. S. Vernov %J Physics %D 2013 %I arXiv %X Von Neumann's uniqueness theorem is extended to a special class of canonical commutation relations, namely the anti-Fock representations, which are realized on a Krein space. %U http://arxiv.org/abs/1301.7712v1