PIRSA:26100064 Scientific Series Strong Gravity

DOI10.48660/26100064

Series: Strong Gravity

Kovachik, A. (2026). Black Hole Sensitivities in Lorentz-Violating Gravity. Perimeter Institute. https://pirsa.org/26100064

Kovachik, Andrew. Black Hole Sensitivities in Lorentz-Violating Gravity. Perimeter Institute, Oct. 01, 2026, https://pirsa.org/26100064 

@misc{ pirsa_PIRSA:26100064,
  doi = {10.48660/26100064},
  url = {https://pirsa.org/26100064},
  author = {Kovachik, Andrew},
  keywords = {Strong Gravity},
  language = {en},
  title = {Black Hole Sensitivities in Lorentz-Violating Gravity},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {oct},
  note = {PIRSA:26100064 see, \url{https://pirsa.org}}
}

Abstract

Lorentz-violating theories modify the effective point-particle description of black holes through sensitivity parameters that describe their response to motion relative to a preferred frame. We calculate these sensitivities for Schwarzschild and Reissner–Nordström black holes in both Einstein-aether and khrono-metric gravity. Despite differences in black hole properties, theories, and parameter regimes, we find that the sensitivity approaches a common, small limiting behavior across most of the parameter space. I will discuss how this small sensitivity could manifest in gravitational-wave observations with future detectors such as LISA. I will also introduce the motivation for Lorentz-violating gravity, describe our method for calculating the sensitivity, and discuss directions for future work.

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