Lorentz symmetry is relevant

@article{Knorr2018LorentzSI,
  title={Lorentz symmetry is relevant},
  author={B. Knorr},
  journal={Physics Letters B},
  year={2018},
  volume={792},
  pages={142-148}
}
  • B. Knorr
  • Published 2018
  • Physics
  • Physics Letters B
  • Abstract We set up a covariant renormalisation group equation on a foliated spacetime which preserves background diffeomorphism symmetry. As a first application of the new formalism, we study the effect of quantum fluctuations in Lorentz symmetry breaking theories of quantum gravity. It is found that once a small breaking is introduced e.g. at the Planck scale, quantum fluctuations enhance this breaking at low energies. A numerical analysis shows that the magnification is of order unity for… CONTINUE READING

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