6 papers
Dynamical hair growth in black hole binaries in Einstein-scalar-Gauss-Bonnet gravity
Lodovico Capuano, Llibert Aresté Saló, Daniela D. Doneva +2
Within the framework of scalar-tensor theories of gravity, certain models can evade classical black hole no-hair theorems. A well-known example is Einstein-scalar-Gauss-Bonnet grav…
Black-Hole Scattering in Einstein-scalar-Gauss-Bonnet: Numerical Relativity Meets Analytics
Shaun Swain, Tamanna Jain, Llibert Aresté Saló
The study of hyperbolic binary black hole encounters yields an effective probe of the strong field regime of black holes, thus providing an additional channel to test General Relat…
Gravitational Memory from Hairy Binary Black Hole Mergers
Silvia Gasparotto, Jann Zosso, Llibert Aresté Saló +2
Gravitational-wave memory is a low-frequency, non-oscillatory component of the radiation field that provides a potentially powerful but as yet undetected probe of strong-field grav…
From mergers to collapse: scalarisation dynamics in neutron star binaries
Llibert Aresté Saló, Ricard Aguilera-Miret, Miguel Bezares +1
We present the first fully non-linear evolutions of binary neutron star mergers in a moving-punctures approach in Einstein-scalar-Gauss-Bonnet gravity. We study both linear and qua…
A well-posed BSSN-type formulation for scalar-tensor theories of gravity with second-order field equations
Harry L. H. Shum, Llibert Aresté Saló, Farid Thaalba +2
Recent developments in the modified harmonic and modified puncture gauges have opened new possibilities for performing stable numerical evolutions beyond General Relativity. In thi…
Black hole binaries in shift-symmetric Einstein-scalar-Gauss-Bonnet gravity experience a slower merger phase
Maxence Corman, Llibert Aresté Saló, Katy Clough
In shift-symmetric Einstein-scalar-Gauss-Bonnet gravity, stationary black holes have a non-vanishing scalar charge. During the inspiral, the phase evolution is modified by several…