On consistent kinetic and derivative interactions for gravitons

@article{Noller2015OnCK,
  title={On consistent kinetic and derivative interactions for gravitons},
  author={J. Noller},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2015},
  volume={2015},
  pages={025-025}
}
  • J. Noller
  • Published 2015
  • Physics
  • Journal of Cosmology and Astroparticle Physics
  • The only known fully ghost-free and consistent Lorentz-invariant kinetic term for a graviton (or indeed for any spin-2 field) is the Einstein-Hilbert term. Here we propose and investigate a new candidate family of kinetic interactions and their extensions to derivative interactions involving several spin-2 fields. These new terms generically break diffeomorphism invariance(s) and as a result can lead to the propagation of 5 degrees of freedom for a single spin-2 field—analogous to ghost-free… CONTINUE READING

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