Dynamical formation of a Reissner-Nordström black hole with scalar hair in a cavity

Sanchis-Gual, N.; Degollado, Juan Carlos; Herdeiro, Carlos; Font, José A.; Montero, Pedro J.

doi:10.1103/physrevd.94.044061

Cited by 73 publications

(96 citation statements)

References 44 publications

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“…the results reported in nonasymptotically flat setups [51][52][53]. In this case, BHs with synchronized hair and a quasi-Kerr horizon may be transient equilibrium states.…”

Section: Prl 119 261101 (2017) P H Y S I C a L R E V I E W L E T T Esupporting

confidence: 50%

Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model

Herdeiro

Radu

2017

Phys. Rev. Lett.

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East and Pretorius have successfully evolved, using fully nonlinear numerical simulations, the superradiant instability of the Kerr black hole (BH) triggered by a massive, complex vector field. Evolutions terminate in stationary states of a vector field condensate synchronized with a rotating BH horizon. We show that these end points are fundamental states of Kerr BHs with synchronized Proca hair. Motivated by the "experimental data" from these simulations, we suggest a universal (i.e., field-spin independent), analytic model for the subset of BHs with synchronized hair that possess a quasi-Kerr horizon, applicable in the weak hair regime. Comparing this model with fully nonlinear numerical solutions of BHs with a synchronized scalar or Proca hair, we show that the model is accurate for hairy BHs that may emerge dynamically from superradiance, whose domain we identify.

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“…the results reported in nonasymptotically flat setups [51][52][53]. In this case, BHs with synchronized hair and a quasi-Kerr horizon may be transient equilibrium states.…”

Section: Prl 119 261101 (2017) P H Y S I C a L R E V I E W L E T T Esupporting

confidence: 50%

Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model

Herdeiro

Radu

2017

Phys. Rev. Lett.

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“…earlier as the final states of super-radiant instabilities in [24][25][26][27], see also [28]. 2 A relevant conjecture here is that of [29].…”

Section: Jhep11(2016)041mentioning

confidence: 89%

“…2 Some of the papers in [24][25][26][27] were looking at the growth of the scalar field in the linear regime only, where it grows exponentially. So these were not true solutions to the field equations, but indicative.…”

Section: The Setupmentioning

confidence: 99%

Hairy black holes in a box

Basu

Krishnan

Subramanian

2016

J. High Energ. Phys.

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We do a systematic study of the phases of gravity coupled to an electromagnetic field and charged scalar in flat space, with box boundary conditions. The scalar-less box has previously been investigated by Braden, Brown, Whiting and York (and others) before AdS/CFT and we elaborate and extend their results in a language more familiar from holography. The phase diagram of the system is analogous to that of AdS black holes, but we emphasize the differences and explain their origin. Once the scalar is added, we show that the system admits both boson stars as well as hairy black holes as solutions, providing yet another way to evade flat space no-hair theorems. Furthermore both these solutions can exist as stable phases in regions of the phase diagram. The final picture of the phases that emerges is strikingly similar to that found recently for holographic superconductors in global AdS, arXiv:1602.07211. Our construction lays bare certain previously unnoticed subtleties associated to the definition quasi-local charges for gravitating scalar fields in finite regions.

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“…We have performed fully non-linear numerical evolutions to test this scenario, following our previous work [23,24]. The initial data is a dyonic RN BH, with ADM mass M , electric charge Q and magnetic charge P , which was evolved using the numerical code described in [23,44,45], adapted to the power-law coupling h(φ) = −αφ 2 . The code uses spherical coordinates under the assumption of spherical symmetry employing the second-order Partially Implicit Runge-Kutta method developed by [46,47].…”

Section: Entropic and Dynamical Preferencementioning

confidence: 99%

Charged black holes with axionic-type couplings: Classes of solutions and dynamical scalarization

et al. 2019

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We consider an augmented Einstein-Maxwell-scalar model including an axionic-type coupling between the scalar and electromagnetic field. We study dyonic black hole solutions in this model. For the canonical axionic coupling emerging from high energy physics, all charged black holes have axion hair. We present their domain of existence and investigate some physical properties. For other axionic-type couplings, two classes of black hole solutions may co-exist in the model: scalar-free Reissner-Nordström black holes and scalarised black holes. We show that in some region of the parameter space, the scalar-free solutions are unstable. Then, there is non-uniqueness since new scalarised black hole solutions with the same global charges also exist, which are entropically preferred over the scalar-free solutions and, moreover, emerge dynamically from the instability of the former. 1 pedrogsilvafernandes@tecnico.ulisboa.pt 2 carlosherdeiro@tecnico.ulisboa.pt 3 pomboalexandremira@ua.pt 4 eugen.radu@ua.pt 5 nicolas.sanchis@tecnico.ulisboa.pt 1 arXiv:1908.00037v1 [gr-qc] 31 Jul 2019Three types of bosonic fields, each consistent on its own as a classical relativistic field theory, are used in the physical description of Nature: spin 0, 1 and 2 fields. According to the accepted models, the last two fields are realised, in their massless version, as the electromagnetic and gravitational field, whereas the scalar field is realised, in a massive, self-interacting version, as the Higgs boson. Beyond these concrete realisations, it has been a recurrent speculation in theoretical physics, ranging from quantum gravity to cosmology, that scalar fields play other roles. One particular example is a pseudo-scalar field known as the axion. This (yet unobserved) particle was suggested in order to solve the strong CP problem, by Peccei and Quinn [1] (see also [2][3][4]). But it was later understood that besides fulfilling its original purpose, the axion could have far reaching implications in cosmology, namely as a candidate for dark matter [5][6][7][8]. More recently, ultralight axion-like fields have been suggested to arise naturally from string theory compactifications [9,10], providing yet another possible origin in the context of a fundamental theory. The theoretical soundness of axions motivated experiments, both proposed and conducted, to detect axionic imprints -see e.g. [11][12][13].In the context of strong gravity, namely black hole (BH) spacetimes, the interplay between the gravitational, electromagnetic and non-standard model scalar fields has a long history. If the scalar field is minimally coupled to the electromagnetic and gravitational field, remarkably, it cannot exist as an equilibrium configuration around spherical BHs [14]. This is a realisation of the celebrated "no-hair" property of BHs -see, e.g. [15,16]. If non-minimal couplings are allowed, however, hairy BH solutions exist. In this paper we shall be interested in such BHs when an axionic-type non-minimal coupling between the scalar and the electromagnetic field are ...

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Dynamical formation of a Reissner-Nordström black hole with scalar hair in a cavity

Cited by 73 publications

References 44 publications

Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model

Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model

Hairy black holes in a box

Charged black holes with axionic-type couplings: Classes of solutions and dynamical scalarization

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