Black hole scalarization

Author: aaqo

August undefined, 2024

WebMar 11, 2024 · We study the consistency of Scalar Gauss-Bonnet Gravity, a generalization of General Relativity where black holes can develop non-trivial hair by the action of a coupling F (Φ) \mathcal {G} between a function of a scalar field and the Gauss-Bonnet invariant of the space-time. WebThe general relativity vacuum black holes (BHs) can be scalarised in models where a scalar field non-minimally couples to the Gauss-Bonnet (GB) invariant. Such GB …

Higher dimensional black hole scalarization - ar5iv.labs.arxiv.org

WebSep 4, 2024 · When both electric and magnetic charges are present, there exists an unstable region of parametric space for the dyonic RN black holes where the scalarization of black holes should occur. That is to say, mixing electric and magnetic charges can reduce the scalarization in this theory. WebJun 4, 2024 · We study scalar fields in a black hole background and show that, when the scalar is suitably coupled to curvature, rapid rotation can induce a tachyonic instability. This instability, which is the hallmark of spontaneous scalarization in the linearized regime, is expected to be quenched by nonlinearities and endow the black hole with scalar hair. lowest level aws certification

Spontaneous scalarization of dyonic black hole in …

WebDec 29, 2024 · In the present paper we study the onset of the spin-induced scalarization of a Kerr black hole in scalar-Gauss–Bonnet gravity with a massive scalar field. Our approach is based on a (2+1) time evolution of the relevant linearized scalar … WebMar 30, 2024 · We show that in the mentioned class of ESTGB theories there exist new black-hole solutions that are formed by spontaneous scalarization of the Schwarzschild black holes in the extreme curvature regime. WebFeb 15, 2024 · Spontaneous scalarization of charged black holes at the approach to extremality Yves Brihaye (Universite de Mons, Belgium), Betti Hartmann (IFSC/USP, Brazil) We study static, spherically symmetric and electrically charged black hole solutions in a quadratic Einstein-scalar-Gauss-Bonnet gravity model. lowest level beat pokemon

Critical Phenomena in Dynamical Scalarization of Charged Black Holes

[2211.01766] Scalarization

WebJan 7, 2024 · Focusing, for illustrative purposes, on a class of theories that do exhibit this instability, we show that stationary, rotating black hole solutions do indeed have scalar hair once the spin-induced instability threshold is exceeded, while black holes that lie below the threshold are described by the Kerr solution. WebWith certain non-minimal coupling between a massless scalar field and the Gauss-Bonnet curvature invariant in the extended scalar-tensor-Gauss-Bonnet (ESTGB) field theory, … lowest level beezle arkWebA black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape its event horizon. [2] The … janeane garofalo breast reduction

"WebMar 16, 2024 · Even though black hole scalarization has been extensively studied recently, little has been done in the direction of understanding the dynamics of this process, especially in the rapidly rotating regime. In the present paper, we focus exactly on this problem by considering the nonlinear dynamics of the scalar field while neglecting the … " - Black hole scalarization

Black hole scalarization

Spin-induced scalarization of Kerr-Newman black hole in …

WebApr 10, 2024 · Download Citation Temperatures of AdS$_2$ black holes and holography revisited In a dilaton gravity model, we revisit the calculation of the temperature of an evaporating black hole that is ... WebSep 22, 2024 · 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 …

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Webthere is scalarization of both black holes and neutron stars has been receiving a lot of attention: scalar-Gauss-Bonnet theories (e.g. [11{13]). Scalarization of both black holes and neutron stars has been scrutinized in various works concerning many di er-ent modi cations (bare mass, self-interactions, di erent eld content, etc [14{19]). WebApr 22, 2024 · Abstract We report a new black hole (BH) scalarization mechanism and disclose novel dynamical critical phenomena in the process of the nonlinear accretion of …

WebJul 8, 2024 · In the simplest scalar-tensor theories, wherein the scalar field is non-minimally coupled to the Ricci scalar, spontaneous scalarization of electrovacuum black holes … WebDec 15, 2024 · The mass gained by the black hole is the initial mass of the other object minus the mass that was converted into energy. The new mass of the black hole, …

WebMay 16, 2024 · Spontaneous scalarization is a famous notion of beyond GR theory. Black hole scalarization is one of the key concepts of holographic superconductors theory due to the spontaneous U(1) symmetry ... WebApr 11, 2024 · PDF In this paper, we study the scalarization of the static and spherically symmetric dyonic Reissner–Nordstrom (RN) black holes in the... Find, read and cite all the research you need on ...

WebMay 10, 2024 · For black holes, scalarization is known to be triggered by a coupling between a scalar and the Gauss-Bonnet invariant. A coupling with the Ricci scalar, …

WebThe general relativity vacuum black holes (BHs) can be scalarised in models where a scalar field non-minimally couples to the Gauss-Bonnet (GB) invariant. Such GB scalarisation comes in two flavours, depending on the GB sign that triggers the phenomenon. Hereafter these two cases are termed GB± scalarisation. For vacuum … janeane garofalo brotherWebNov 28, 2024 · The black hole scalarization in a special Einstein-scalar–Gauss–Bonnet (EsGB) gravity has been widely investigated in recent years. Especially, the spontaneous scalarization of scalar-free ... lowest level birth controlWebJul 4, 2024 · We consider a class of scalar-Gauss-Bonnet gravity theories within which no tachyonic instability can occur. Although the Schwarzschild black holes are linearly stable against scalar perturbations, we show dynamically that for certain choices of the coupling function they are unstable against nonlinear scalar perturbations. lowest level beast of burdenWebJan 26, 2024 · In fact, black holes can be fully characterized by only three physical quantities: their mass, spin and charge. Since they have no additional "hairy" attributes to distinguish them, black... lowest level bossingWebDec 22, 2024 · 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 … janeane garofalo bowling ballWebThe Bondi radius ( Bondi, 1952) is the radius of the sphere of gravitational influence of the black hole. A test mass inside this sphere feels the gravitational presence of the black hole. As it is derived from setting the … janeane garofalo edinburgh fringeWebThe Black Hole Calculator computes quantities about black holes in two systems of units. Add the inputs and press Calculate. The outputs in the Standard Mode and the Advanced Mode are: Standard Mode: Category, … lowest level black belt