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GRChombo: An adaptable numerical relativity code for fundamental physics
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GRChombo: An adaptable numerical relativity code for fundamental physics
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GRChombo is an open-source code for performing Numerical Relativity time evolutions, built on top of the publicly available Chombo software for the solution of PDEs. Whilst GRChombo uses standard techniques in NR, it focusses on applications in theoretical physics where adaptability, both in terms of grid structure, and in terms of code modification, are key drivers.
Forward citations
Cited by 18 Pith papers
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Black-Hole Scattering in Einstein-scalar-Gauss-Bonnet: Numerical Relativity Meets Analytics
Numerical relativity simulations of black hole scattering in Einstein-scalar-Gauss-Bonnet gravity agree closely with effective-one-body analytic predictions.
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Gravitational Memory from Hairy Binary Black Hole Mergers
Gravitational memory from hairy binary black hole mergers in scalar-Gauss-Bonnet gravity differs from GR by a few percent due to altered nonlinear dynamics, with direct scalar contributions suppressed, and including m...
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BHaHAHA: A Fast, Robust Apparent Horizon Finder Library for Numerical Relativity
BHaHAHA provides the first infrastructure-agnostic open-source apparent horizon finder using a hyperbolic flow method, with reported 64x speedups on difficult cases and 2.1x faster dynamic tracking than AHFinderDirect.
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Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar Theory
Numerical simulations of binary black hole coalescence in EMS theory show dynamic triggering of scalar hair depending on coupling strength and remnant charge.
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Cuspidal Singularities in Collapsing Domain Walls
Collapsing domain walls generically form cuspidal edge and vertex singularities captured by Nambu-Goto and eikonal approximations and reproduced in field theory simulations.
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Scalar memory from compact binary coalescences
In Ricci-coupled scalar-Gauss-Bonnet gravity, the change in scalar charge during binary black hole mergers generates a scalar memory contribution that modifies the total memory signal on observable timescales.
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CosmoLattice 2.0
CosmoLattice 2.0 adds non-minimally coupled scalars, axion-gauge interactions, defect initial conditions, lower-dimensional lattices, and GPU acceleration to an open-source early-universe lattice code.
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CosmoLattice 2.0
CosmoLattice v2.0 extends lattice cosmology simulations with non-minimal scalars, ALP–gauge couplings, defect networks, low-storage RK integrators, optimized GWs, and O(10) GPU speedups.
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Binary Black Hole Coalescence and the Dynamics of Scalar Hair in Einstein-Maxwell-Scalar Theory
Head-on charged black hole mergers in Einstein-Maxwell-scalar theory can leave a scalarized remnant or dynamically lose scalar hair, depending on coupling strength and remnant charge.
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Boson star-black hole binaries: initial data and head-on collisions
A one-body conformal-factor correction stabilizes boson star-black hole initial data, enabling gravitational-wave analysis that shows higher multipoles can discriminate mixed mergers from pure black-hole binaries.
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Massive boson stars: Stability and GW emission in head-on mergers
Quartically self-interacting massive boson stars are stable only up to the first mass maximum; their head-on mergers yield a boson-star remnant, a black hole at contact, or two black holes formed before contact, with ...
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Scalar fields around black hole binaries in LIGO-Virgo-KAGRA
Semi-analytic waveform model for scalar environments around black hole binaries is validated against numerical relativity and applied to LIGO-Virgo-KAGRA data to obtain upper limits on scalar densities with tentative ...
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The art of simulating the early Universe. Part III: Scalar-Gauge-Fluid Dynamics
Detailed continuum-to-lattice schemes are given for perfect/imperfect fluids alone or coupled to scalars/gauges in FLRW, enabling self-consistent CosmoLattice simulations of early-Universe plasma dynamics and GWs.
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Preheating and oscillon formation in Einstein-scalar-Gauss-Bonnet gravity
Simulations in Einstein-scalar-Gauss-Bonnet gravity show oscillons form with similar properties to standard cases but trigger EFT breakdown for large couplings via high local curvatures.
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Black Hole-Boson Star Binaries: Gravitational Wave Signals and Tidal Disruption
Numerical simulations of black hole-boson star binaries show that scalar self-interactions can suppress tidal disruption while radiative efficiency depends on the chosen potential.
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Massive boson stars: Stability and GW emission in head-on mergers
Numerical evolutions of quartically self-interacting boson stars reveal three merger outcomes and a non-monotonic gravitational-wave energy pattern driven by the competition between compactness and tidal deformability.
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Massive boson stars: Waveform-based branch diagnosis with neural reconstruction
Using an existing numerical-relativity catalogue, the paper builds a branch-conditioned neural reconstruction model that infers boson-star merger outcomes from waveform morphology by comparing reconstruction quality a...
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Search for growing angular modes in ultracompact boson star evolutions
The paper decomposes simulation data of ultracompact boson stars into spherical harmonics as a first step toward characterizing non-spherical modes.
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