Ultraviolet-infrared mixing on the noncommutative Minkowski space in the Yang-Feldman formalism (1105.6240v2)

Published 31 May 2011 in hep-th

Abstract: We study infrared divergences due to ultraviolet-infrared mixing in quantum field theory on Moyal space with Lorentzian signature in the Yang-Feldman formalism. Concretely, we are considering the phi⁴ and the phi³ model in arbitrary even dimension. It turns out that the situation is worse than in the Euclidean setting, in the sense that we find infrared divergences in graphs that are finite there. We briefly discuss the problems one faces when trying to adapt the nonlocal counterterms that render the Euclidean model renormalizable.

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Authors (1)

Jochen Zahn

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