Quasinormal modes of scalarized black holes in the Einstein–Maxwell–Scalar theory

Myung, Yun Soo; Zou, De-Cheng

doi:10.1016/j.physletb.2019.01.046

Cited by 92 publications

(62 citation statements)

References 25 publications

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“…Here the instability arises when the product −β 0 T , where β 0 is the effective linear matter-scalar coupling and T is the trace of the stress-energy tensor, is larger than some critical value [33]: spontaneous scalarization in neutron stars is induced by couplings with matter (see also [34,35]). Later it was realized that spontaneous scalarization can occur for charged black holes in Einstein-Maxwell-scalar (EMs) theory, for certain choices of the scalar coupling function and coupling strength [36][37][38][39][40][41]. This "charge-induced" spontaneous scalarization presents many similarities with the case of curvature-induced spontaneous scalarization of black holes [24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Spinning and excited black holes in Einstein-scalar-Gauss–Bonnet theory

Collodel

Kleihaus

Kunz

et al. 2020

Class. Quantum Grav.

109

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We construct rotating black holes in Einstein-scalar-Gauss-Bonnet theory with a quadratic coupling function. We map the domain of existence of the rotating fundamental solutions, we construct radially excited rotating black holes (including their existence lines), and we show that there are angularly excited rotating black holes. The bifurcation points of the radially and angularly excited solutions branching out of the Schwarzschild solution follow a regular pattern.

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Section: Introductionmentioning

confidence: 99%

Spinning and excited black holes in Einstein-scalar-Gauss–Bonnet theory

Collodel

Kleihaus

Kunz

et al. 2020

Class. Quantum Grav.

109

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“…Regularity of the scalar field at the origin then requires the coupling to diverge as ∼ 1/r 2N +2 . From (12) this implies that the energy density is finite therein and from (6),…”

Section: Everywhere Regular Solutionsmentioning

confidence: 97%

“…This means that even though the electrovacuum Reissner-Nordström (RN) black hole is a solution of the EMS model, for sufficiently high charge to mass ratio this black hole becomes unstable: it becomes energetically favourable for the RN black hole to scalarise. A new family of scalarised black holes bifurcates from the RN family, which contains the end states of this dynamical scalarisation mechanism -see also [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A class of solitons in Maxwell-scalar and Einstein–Maxwell-scalar models

2020

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Recently, no-go theorems for the existence of solitonic solutions in Einstein-Maxwellscalar (EMS) models have been established [1]. Here we discuss how these theorems can be circumvented by a specific class of non-minimal coupling functions between a real, canonical scalar field and the electromagnetic field. When the non-minimal coupling function diverges in a specific way near the location of a point charge, it regularises all physical quantities yielding an everywhere regular, localised lump of energy. Such solutions are possible even in flat spacetime Maxwell-scalar models, wherein the model is fully integrable in the spherical sector, and exact solutions can be obtained, yielding an explicit mechanism to de-singularise the Coulomb field. Considering their gravitational backreaction, the corresponding (numerical) EMS solitons provide a simple example of self-gravitating, localised energy lumps. ‡

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“…Recently, a novel approach to trigger black hole scalar hairs was provided by considering non-minimal couplings between scalar fields and the Gauss-Bonnet invariant [49][50][51][52][53][54][55]. Moreover, it was found that this scalar-Gauss-Bonnet coupling can lead to scalar condensations in various black hole models [56][57][58][59][60][61][62][63][64]. Inspired by these black hole properties, in the background of neutral reflecting compact stars, we have constructed scalar hairy configurations by including scalar-Gauss-Bonnet couplings with numerical methods [65].…”

Section: Introductionmentioning

confidence: 99%

Analytical investigations on formations of hairy neutral reflecting shells in the scalar-Gauss–Bonnet gravity

Peng

2020

Eur. Phys. J. C

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We study scalarization of spherically symmetric neutral reflecting shells in the scalar-tensor gravity. We consider neutral static massless scalar fields non-minimally coupled to the Gauss-Bonnet invariant. We obtain a relation representing the existence regime of hairy neutral reflecting shells.For parameters unsatisfying this relation, the massless scalar field cannot exist outside the neutral reflecting shell. In the parameter region where this relation holds, we get analytical solutions of scalar field hairs outside neutral reflecting shells.

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Quasinormal modes of scalarized black holes in the Einstein–Maxwell–Scalar theory

Cited by 92 publications

References 25 publications

Spinning and excited black holes in Einstein-scalar-Gauss–Bonnet theory

Spinning and excited black holes in Einstein-scalar-Gauss–Bonnet theory

A class of solitons in Maxwell-scalar and Einstein–Maxwell-scalar models

Analytical investigations on formations of hairy neutral reflecting shells in the scalar-Gauss–Bonnet gravity

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