No UV/IR Mixing in Unitary Space-Time Noncommutative Field Theory
نویسندگان
چکیده
In this article we calculate several divergent amplitudes in φ-theory on noncommutative space-time (Θ0i 6= 0) in the framework of Interaction Point Time Ordered Perturbation Theory (IPTOPT), continuing work done in hep-th/0209253. On the ground of these results we find corresponding Feynman rules which allow for a much easier diagrammatic calculation of amplitudes. The most important feature of the present theory is the lack of the UV/IR mixing problem in all amplitudes calculated so far. Though we are not yet able to give a rigorous proof we provide a strong argument for this result to hold in general. Together with the found Feynman rules this opens promising vistas towards the systematic renormalization of noncommutative field theories. [email protected] [email protected], work supported by “Fonds zur Förderung der Wissenschaften” (FWF) under contract P15015-TPH.
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