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Can anyone explain in a simple manner why interacting noncommutative quantum field theories with space-time noncommutativity of the Moyal bracket sort are unitary?

Thanks.

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This is a bit over my head (and same goes for most people here), but I do hope you get a good answer. (If nobody else contributes then perhaps I'll see if I can research it a bit, if/when I get time) –  David Z Dec 12 '11 at 20:50
    
This paper seems relevant arxiv.org/abs/hep-th/0005129 –  Qmechanic Dec 13 '11 at 14:37

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