RECORD
CLAP for modified gravity: scalar instabilities in binary black hole spacetimes
General Relativity and Quantum Cosmology · Submitted 18 May 2021
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim This "dynamical scalarization" process is easier to trigger (i.e. occurs at lower values of the coupling constant of the theory) than the corresponding process for isolated black holes.
The compiled record
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
Open the compiled record
The abstract, sentence by sentence
The close limit approximation of binary black hole is a powerful method to study gravitational-wave emission from highly non-linear geometries. In this work, we use it as a tool to model black hole spacetimes in theories of gravity with a new fundamental scalar degree of freedom. As an example, we consider Einstein-scalar-Gauss-Bonnet gravity, which admits as solution the Schwarzschild geometry as well as black holes with scalar hair. Accordingly, we find scalar perturbations growing unbounded around binary systems. This "dynamical scalarization" process is easier to trigger (i.e. occurs at lower values of the coupling constant of the theory) than the corresponding process for isolated black holes. Our results and framework highlight the fundamental role of the interaction during the collision of compact objects. They also emphasize the importance of having waveforms for black hole binaries in alternative theories, in order to consistently perform tests beyond General Relativity.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The close limit approximation of binary black hole is a powerful method to study gravitational-wave emission from highly non-linear geometries. | background 0.99 | 0.06 | 0.02 | asserted 1.00 |
| s1 | In this work, we use it as a tool to model black hole spacetimes in theories of gravity with a new fundamental scalar degree of freedom. | method 0.78 | 0.89 | 0.04 | asserted 0.98 |
| s2 | As an example, we consider Einstein-scalar-Gauss-Bonnet gravity, which admits as solution the Schwarzschild geometry as well as black holes with scalar hair. | contribution 0.40 | 0.09 | 0.04 | asserted 0.98 |
| s3 | Accordingly, we find scalar perturbations growing unbounded around binary systems. | result 1.00 | 0.95 | 0.49 | asserted 1.00 |
| s4 | This "dynamical scalarization" process is easier to trigger (i.e. occurs at lower values of the coupling constant of the theory) than the corresponding process for isolated black holes. | result 0.93 | 0.88 | 0.45 | asserted 1.00 |
| s5 | Our results and framework highlight the fundamental role of the interaction during the collision of compact objects. | interpretation 1.00 | 0.50 | 0.41 | asserted 0.96 |
| s6 | They also emphasize the importance of having waveforms for black hole binaries in alternative theories, in order to consistently perform tests beyond General Relativity. | interpretation 0.82 | 0.25 | 0.14 | asserted 0.90 |
What was examined, and what was not
- arXiv listing abstract v1
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
The close limit approximation of binary black hole is a powerful method to study gravitational-wave emission from highly non-linear geometries. In this work, we use it as a tool to model black hole spacetimes in theories of gravity with a new fundamental scalar degree of freedom. As an example, we consider Einstein-scalar-Gauss-Bonnet gravity, which admits as solution the Schwarzschild geometry as well as black holes with scalar hair. Accordingly, we find scalar perturbations growing unbounded around binary systems. This "dynamical scalarization" process is easier to trigger (i.e. occurs at lower values of the coupling constant of the theory) than the corresponding process for isolated black holes. Our results and framework highlight the fundamental role of the interaction during the collision of compact objects. They also emphasize the importance of having waveforms for black hole binaries in alternative theories, in order to consistently perform tests beyond General Relativity.
Human review
References
How the literature uses it
8 arXiv papers cite this in 9 sentences
What it cites · 59 sentences without a confident label
Builds on 1 paper
-
Compare to previous literature [ref] , we evaluate the static unstable bound states also for $ℓ>0$.
Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling · Introduction · 0.88
Uses the method or tool of 8 papers
-
In order to model BBH configurations, we use results from the Close Limit Approximation (CLAP) of binary BHs [ref] .
Head-on collision of unequal mass black holes: close-limit predictions · Introduction · 1.00
-
In order to model BBH configurations, we use results from the Close Limit Approximation (CLAP) of binary BHs [ref] .
Colliding Black Holes: The Close Limit · Introduction · 1.00
-
In order to model BBH configurations, we use results from the Close Limit Approximation (CLAP) of binary BHs [ref] .
Head-on collision of two black holes: comparison of different approaches · Introduction · 1.00
Compares with 1 paper
-
Considering the quadratic coupling function in Eq.[ref], a comparison with the results in Ref. [ref] is straightforward.
Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling · Introduction · 1.00
Cites as background 29 papers
-
For such scenario, we refer the interested reader to Ref. [ref] .
Applications of the close-limit approximation: horizonless compact objects and scalar fields · Introduction · 0.93
-
EsGB emerges naturally in the low-energy limit of string theories [ref] , and is the only alternative theory that includes an extra scalar degree-of-freedom, coupled to a quadratic curvature term constructed from the spacetime metric, which equations of motion are second (differential) order.
Dilatonic Black Holes in Higher Curvature String Gravity · Introduction · 0.91
-
EsGB emerges naturally in the low-energy limit of string theories [ref] , and is the only alternative theory that includes an extra scalar degree-of-freedom, coupled to a quadratic curvature term constructed from the spacetime metric, which equations of motion are second (differential) order.
From Lovelock to Horndeski's generalised scalar-tensor theory · Introduction · 0.91
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.