Electrically charged black hole with scalar hair

AbstractA static spherically symmetric black hole usually turns out to be either a Schwarzschild black hole or a Reissner-Nordström black hole. This result was summarised by Ruffini and Wheeler as the so-called no hair conjecture which states that for a spherically symmetric black hole only the information about mass (M) and electric charge (e) of the black hole is available for an external observer. In this work, we calculate the emission rate of charged particles from an asymptotically flat charged spherically symmetric black hole endowed with a scalar hair using a semi-classical tunneling formalism. We observe that the total entropy of the black hole contains an energy-dependent part due to the scalar charge. The upper bound on the charge-mass ratio of the emitted particles is also observed to decrease with the scalar charge as well.

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Electrically charged black hole solutions in generalized gauge field theories

Journal of Physics Conference Series ◽

10.1088/1742-6596/314/1/012065 ◽

2011 ◽

Vol 314 ◽

pp. 012065 ◽

Cited By ~ 2

Author(s):

J Diaz-Alonso ◽

D Rubiera-Garcia

Keyword(s):

Black Hole ◽

Gauge Field ◽

Gauge Field Theories ◽

Field Theories ◽

Charged Black Hole ◽

Electrically Charged ◽

Black Hole Solutions

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Charged black hole with a scalar hair in (2+1) dimensions

Physical Review D ◽

10.1103/physrevd.87.124008 ◽

2013 ◽

Vol 87 (12) ◽

Cited By ~ 49

Author(s):

Wei Xu ◽

Liu Zhao

Keyword(s):

Black Hole ◽

Charged Black Hole ◽

Scalar Hair

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Diving inside a hairy black hole

Journal of High Energy Physics ◽

10.1007/jhep05(2021)152 ◽

2021 ◽

Vol 2021 (5) ◽

Author(s):

Nicolás Grandi ◽

Ignacio Salazar Landea

Keyword(s):

Black Hole ◽

Cosmic Censorship ◽

Charged Black Hole ◽

Cauchy Horizon ◽

Strong Cosmic Censorship ◽

Scalar Hair ◽

Hairy Black Hole ◽

Cosmic Censorship Conjecture

Abstract We investigate the interior of the Einstein-Gauss-Bonnet charged black-hole with scalar hair. We find a variety of dynamical epochs, with the particular important feature that the Cauchy horizon is not present. This makes the violation of the no-hair theorem a possible tool to understand how might the strong cosmic censorship conjecture work.

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Quantum probe of time-like naked singularities for electrically and magnetically charged black holes in a model of nonlinear electrodynamics

Modern Physics Letters A ◽

10.1142/s0217732320502429 ◽

2020 ◽

Vol 35 (29) ◽

pp. 2050242

Author(s):

M. Mangut ◽

O. Gurtug

Keyword(s):

Black Hole ◽

Quantum Mechanics ◽

Time Evolution ◽

Charged Black Hole ◽

Nonlinear Electrodynamics ◽

Naked Singularities ◽

Black Hole Background ◽

Quantum Wave ◽

Electrically Charged ◽

Specific Quantum

The time-like naked singularities of the electrically and magnetically charged black hole solutions obtained in a model of nonlinear electrodynamics proposed by Kruglov is investigated within the framework of quantum mechanics. In view of quantum mechanics, the spacetime is quantum regular provided that the time evolution of the test quantum wave packet uniquely propagates on an underlying background. Rigorous calculations have shown that when the singularity is probed with specific quantum wave/particle modes, the quantum wave operator turns out to be essentially self-adjoint. Thus, the time evolution of the quantum wave/particle is determined uniquely. In the case of electrically charged black hole background, the unique evolution is restricted to [Formula: see text]-wave only. For the two different magnetically charged black hole backgrounds, the time evolution is restricted to different modes for each case.

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