Locality, Causality and Noncommutative Geometry

@article{Chu2005LocalityCA,
  title={Locality, Causality and Noncommutative Geometry},
  author={Chong-Sun Chu and Ko Furuta and Takeo Inami},
  journal={arXiv: High Energy Physics - Theory},
  year={2005}
}
We analyse the causality condition in noncommutative field theory and show that the nonlocality of noncommutative interaction leads to a modification of the light cone to the light wedge. This effect is generic for noncommutative geometry. We also check that the usual form of energy condition is violated and propose that a new form is needed in noncommutative spacetime. On reduction from light cone to light wedge, it looks like the noncommutative dimensions are effectively washed out and… 

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