Corpus ID: 219573300

Dark energy loopholes some time after GW170817

@inproceedings{Bordin2020DarkEL,
  title={Dark energy loopholes some time after GW170817},
  author={Lorenzo Bordin and Edmund J. Copeland and Antonio Padilla},
  year={2020}
}
We revisit the constraints on scalar tensor theories of modified gravity following the purge of GW170817. We pay particular attention to dynamical loopholes where the anomalous speed of propagation of the gravitational wave can vanish on-shell, when we impose the dynamical field equations. By working in the effective field theory formalism we are able to improve on previous analyses, scanning a much wider class of theories, including Beyond Horndeski and DHOST. Furthermore, the formalism is… CONTINUE READING

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