Black-hole binaries and waveforms in Quadratic Gravity

2025/03/17 by Held, Aaron, Lim, Hyun · 2 citations
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)

paper · doi:10.48550/arxiv.2503.13428

Abstract

We report on the first numerical-relativity simulations of black-hole binaries that deviate from General Relativity due to quadratic-curvature corrections. Said theory of Quadratic Gravity propagates additional massive modes and admits both Kerr and non-Kerr black-hole solutions. We chose the respective masses "at threshold", i.e., such that (at least) one of the black holes dynamically transitions from the Kerr to the non-Kerr branch during the early inspiral. The subsequent waveforms differ from their General Relativity counterparts throughout inspiral, merger, and ringdown.

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• Global stability of ghostly field theories: Classical scattering in (N+1) dimensions
• Non-minimal light-curvature couplings and black-hole imaging

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