EFT corrections to scalar and vector quasinormal modes of rapidly rotating black holes

Understand

Quasinormal modes characterize the final stage of a black hole merger.

• In this regime, spacetime curvature is high, these modes can be used to probe potential corrections to general relativity.
• In this paper, we utilize the effective field theory framework to compute the leading order correction to massless scalar and electromagnetic quasinormal modes.
• Proceeding perturbatively in the size of the effective field theory length scale, we describe a general method to compute the frequencies for Kerr black holes of any spin.