Non-Commutativity, Teleology and GRB Time Delay
arXiv:0904.1079 · doi:10.1016/j.physletb.2009.11.032
Abstract
We propose a model in which an energy-dependent time delay of a photon originates from space-time non-commutativity, the time delay is due to a noncommutative coupling between dilaton and photon. We predict that in our model, high energy photons with different momenta can either be delayed or superluminal, this may be related to a possible time delay reported by the Fermi LAT and Fermi GBM Collaborations.
8 pages, 1 figure, typo revised, contents and reference added