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Black hole sensitivities in Einstein-scalar-Gauss-Bonnet gravity

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arxiv 2202.01329 v1 pith:PFFTXXZK submitted 2022-02-02 gr-qc

Félix-Louis Julié , Hector O. Silva , Emanuele Berti , Nicolás Yunes This is my paper
classification gr-qc
keywords blackeinstein-scalar-gauss-bonnetgravityholesensitivitiesholesbinariesresults
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The post-Newtonian dynamics of black hole binaries in Einstein-scalar-Gauss-Bonnet theories of gravity depends on the so-called "sensitivities", quantities which characterize a black hole's adiabatic response to the time-dependent scalar field environment sourced by its companion. In this work, we calculate numerically the sensitivities of nonrotating black holes, including spontaneously scalarized ones, in three classes of Einstein-scalar-Gauss-Bonnet gravity: the shift-symmetric, dilatonic and Gaussian theories. When possible, we compare our results against perturbative analytical results, finding excellent agreement. Unlike their general relativistic counterparts, black holes in Einstein-scalar-Gauss-Bonnet gravity only exist in a restricted parameter space controlled by the theory's coupling constant. A preliminary study of the role played by the sensitivities in black hole binaries suggests that, in principle, black holes can be driven outside of their domain of existence during the inspiral, for binary parameters which we determine.

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Cited by 4 Pith papers

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  1. Black-Hole Scattering in Einstein-scalar-Gauss-Bonnet: Numerical Relativity Meets Analytics

    gr-qc 2026-05 unverdicted novelty 8.0 of 10

    Numerical relativity simulations of black hole scattering in Einstein-scalar-Gauss-Bonnet gravity agree closely with effective-one-body analytic predictions.

  2. Scalarization and descalarization in hyperbolic encounters of black holes

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    Numerical relativity in the decoupling limit reveals dynamical scalarization and spin-induced (de)scalarization during hyperbolic black hole encounters for both signs of the coupling.

  3. Massive scalar fields in eccentric regime: Detectability and constraints from LISA observations of extreme mass-ratio inspirals

    gr-qc 2026-06 unverdicted novelty 5.0 of 10

    Computes scalar and tensor fluxes for eccentric EMRIs with massive scalars, quantifies dephasing, and shows via Fisher matrix that LISA can constrain scalar charge and mass.

  4. Tests of General Relativity with GW230529: a neutron star merging with a lower mass-gap compact object

    gr-qc 2024-06 conditional novelty 5.0 of 10

    Parameterized inspiral tests on GW230529 find consistency with GR, with |δφ̂_{-2}| ≲ 8×10^{-5} and ℓ_GB ≲ 0.51 M_⊙ in ESGB theories.

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