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arXiv · hep-th/0411127

Violation of Remaining Lorentz Symmetry in the Approach of Time-Ordered Perturbation Theory to Space-Time Noncommutativity

Tobias Reichenbach
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Abstract

We study remaining Lorentz symmetry, i.e. Lorentz transformations which leave the noncommutativity parameter $θ^{μν}$ invariant, within the approach of time-ordered perturbation theory (TOPT) to space-time noncommutative theories. Their violation is shown in a simple scattering process. We argue that this results from the non-covariant transformation properties of the phase factors appearing in TOPT.

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Tobias Reichenbach. 2005-01-20. Violation of Remaining Lorentz Symmetry in the Approach of Time-Ordered Perturbation Theory to Space-Time Noncommutativity. https://doi.org/10.1016/j.physletb.2004.12.002

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