A strong astrophysical constraint on the violation of special relativity by quantum gravity

@article{Jacobson2003ASA,
  title={A strong astrophysical constraint on the violation of special relativity by quantum gravity},
  author={Ted Jacobson and Stefano Liberati and David M. Mattingly},
  journal={Nature},
  year={2003},
  volume={424},
  pages={1019-1021}
}
Special relativity asserts that physical phenomena appear the same to all unaccelerated observers. This is called Lorentz symmetry and relates long wavelengths to short ones: if the symmetry is exact it implies that space-time must look the same at all length scales. Several approaches to quantum gravity, however, suggest that there may be a microscopic structure of space-time that leads to a violation of Lorentz symmetry. This might arise because of the discreteness or non-commutivity of space… 
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