Results 11 to 20 of about 275,111 (343)
Mixed scalarization of charged black holes: From spontaneous to nonlinear scalarization [PDF]
Physical Review D, 2023 Scalarized black holes (BH) have been shown to form dynamically in extended-scalar-tensor theories, either through spontaneous scalarization -- when the BH is unstable against linear perturbations -- or through a non-linear scalarization.
Z. Belkhadria, A. M. Pombo
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Spontaneous scalarization [PDF]
Reviews of Modern Physics, 2022 Scalarization is a mechanism that endows strongly self-gravitating bodies, such as neutron stars and black holes, with a scalar-field configuration. It resembles a phase transition in that the scalar configuration appears only when a certain quantity ...
D. Doneva +4 more
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Spin-induced dynamical scalarization, descalarization, and stealthness in scalar-Gauss-Bonnet gravity during a black hole coalescence [PDF]
Physical Review D, 2022 Particular couplings between a scalar field and the Gauss-Bonnet invariant lead to spontaneous scalarization of black holes. Here we continue our work on simulating this phenomenon in the context of binary black hole systems.
M. Elley +3 more
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Spontaneous scalarization in generalized scalar-tensor theory [PDF]
Physical Review D, 2019 Spontaneous scalarization is a mechanism that endows relativistic stars and black holes with a nontrivial configuration only when their spacetime curvature exceeds some threshold. The standard way to trigger spontaneous scalarization is via a tachyonic instability at the linear level, which is eventually quenched due to the effect of non-linear terms ...
Andreou, Nikolas +3 more
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Spin-charge induced spontaneous scalarization of Kerr-Newman black holes [PDF]
Physical Review D, 2022 We investigate the tachyonic instability of Kerr-Newman (KN) black hole in the Einstein-Maxwell-scalar (EMS) theory with a positive coupling parameter α . This corresponds to exploring the onset of spontaneous scalarization for KN black holes.
Meng-Yun Lai +3 more
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qOS-induced scalarization of black holes in extended scalar-tensor theories
Physics Letters BIn the extended scalar-tensor-Gauss-Bonnet (ESTGB) theory, spontaneous scalarization has been extensively studied in various types of black holes.
Lu Chen, Shun Jiang
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Horizon curvature and spacetime structure influences on black hole scalarization
European Physical Journal C: Particles and Fields, 2021 Black hole spontaneous scalarization has been attracting more and more attention as it circumvents the well-known no-hair theorems. In this work, we study the scalarization in Einstein–scalar-Gauss–Bonnet theory with a probe scalar field in a black hole ...
Hong Guo +3 more
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Spontaneous Scalarization of Charged Black Holes. [PDF]
Physical Review Letters, 2018 Extended scalar-tensor Gauss-Bonnet (ESTGB) gravity has been recently argued to exhibit spontaneous scalarization of vacuum black holes (BHs). A similar phenomenon can be expected in a larger class of models, which includes, e.g., Einstein-Maxwell scalar
C. Herdeiro +3 more
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Scalar-connection gravity and spontaneous scalarization [PDF]
Physical Review D, 2021 Scalar-tensor theories of gravity are known to allow significant deviations from general relativity through various astrophysical phenomena. In this paper, we formulate a scalar-connection gravity by setting up scalars and connection configurations instead of metric. Since the matter sector is not straightforward to conceive without a metric, we invoke
Hemza Azri, Salah Nasri
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Dynamical scalarization during neutron star mergers in scalar-Gauss-Bonnet theory [PDF]
Physical Review D, 2023 In certain classes of the scalar-Gauss-Bonnet theory strong spacetime curvature in the vicinity of neutron stars and black holes can spontaneously trigger scalarization in the compact object if the coupling strength of the scalar field to the Gauss ...
Hao-Jui Kuan +5 more
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