scholarly journals Scalar hairy black holes and scalarons in the isolated horizons formalism

2006 ◽  
Vol 73 (8) ◽  
Author(s):  
Alejandro Corichi ◽  
Ulises Nucamendi ◽  
Marcelo Salgado
Keyword(s):  
Black Holes ◽  
Isolated Horizons ◽  
Hairy Black Holes

scholarly journals Hairy black holes in disformal scalar-tensor gravity theories

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Cristian Erices ◽  
Pantelis Filis ◽  
Eleftherios Papantonopoulos
Keyword(s):  
Black Holes ◽  
Hairy Black Holes ◽  
Gravity Theories

scholarly journals New non-extremal and BPS hairy black holes in gauged $$ \mathcal{N} $$ = 2 and $$ \mathcal{N} $$ = 8 supergravity

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Andres Anabalon ◽  
Dumitru Astefanesei ◽  
Antonio Gallerati ◽  
Mario Trigiante
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Boundary Conditions ◽  
Charged Black Hole ◽  
Dual Theory ◽  
Real Numbers ◽  
Hairy Black Holes ◽  
Interpolation Parameter ◽  
Black Hole Solutions ◽  
Extremal Black Holes

Abstract In this article we study a family of four-dimensional, $$ \mathcal{N} $$ N = 2 supergravity theories that interpolates between all the single dilaton truncations of the SO(8) gauged $$ \mathcal{N} $$ N = 8 supergravity. In this infinitely many theories characterized by two real numbers — the interpolation parameter and the dyonic “angle” of the gauging — we construct non-extremal electrically or magnetically charged black hole solutions and their supersymmetric limits. All the supersymmetric black holes have non-singular horizons with spherical, hyperbolic or planar topology. Some of these supersymmetric and non-extremal black holes are new examples in the $$ \mathcal{N} $$ N = 8 theory that do not belong to the STU model. We compute the asymptotic charges, thermodynamics and boundary conditions of these black holes and show that all of them, except one, introduce a triple trace deformation in the dual theory.

scholarly journals Thermodynamically stable asymptotically flat hairy black holes with a dilaton potential

2019 ◽  
Vol 2019 (3) ◽  
Author(s):  
Dumitru Astefanesei ◽  
David Choque ◽  
Francisco Gómez ◽  
Raúl Rojas
Keyword(s):  
Black Holes ◽  
Asymptotically Flat ◽  
Hairy Black Holes

scholarly journals Geodesic motion around hairy black holes

2021 ◽  
pp. 168557
Author(s):  
A. Ramos ◽  
C. Arias ◽  
R. Avalos ◽  
E. Contreras
Keyword(s):  
Black Holes ◽  
Geodesic Motion ◽  
Hairy Black Holes

scholarly journals Spinning boson stars and hairy black holes with nonminimal coupling

2018 ◽  
Vol 27 (11) ◽  
pp. 1843009 ◽  
Author(s):  
Carlos A. R. Herdeiro ◽  
Eugen Radu
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Scalar Field ◽  
Coupling Parameter ◽  
Nonminimal Coupling ◽  
Boson Stars ◽  
Hairy Black Holes ◽  
Black Hole Solutions ◽  
Hairy Black Hole ◽  
Coupled Theory

We obtain spinning boson star solutions and hairy black holes with synchronized hair in the Einstein–Klein–Gordon model, wherein the scalar field is massive, complex and with a nonminimal coupling to the Ricci scalar. The existence of these hairy black holes in this model provides yet another manifestation of the universality of the synchronization mechanism to endow spinning black holes with hair. We study the variation of the physical properties of the boson stars and hairy black holes with the coupling parameter between the scalar field and the curvature, showing that they are, qualitatively, identical to those in the minimally coupled case. By discussing the conformal transformation to the Einstein frame, we argue that the solutions herein provide new rotating boson star and hairy black hole solutions in the minimally coupled theory, with a particular potential, and that no spherically symmetric hairy black hole solutions exist in the nonminimally coupled theory, under a condition of conformal regularity.

scholarly journals Rotating hairy black holes in arbitrary dimensions

2018 ◽  
Vol 97 (2) ◽  
Author(s):  
Cristián Erices ◽  
Cristián Martínez
Keyword(s):  
Black Holes ◽  
Hairy Black Holes ◽  
Arbitrary Dimensions

scholarly journals Hairy black holes by gravitational decoupling

2021 ◽  
Vol 31 ◽  
pp. 100744 ◽  
Author(s):  
J. Ovalle ◽  
R. Casadio ◽  
E. Contreras ◽  
A. Sotomayor
Keyword(s):  
Black Holes ◽  
Hairy Black Holes

scholarly journals Nutty black holes in Galileon scalar-tensor gravity

2018 ◽  
Vol 33 (32) ◽  
pp. 1850189 ◽  
Author(s):  
A. Brandelet ◽  
Y. Brihaye ◽  
T. Delsate ◽  
L. Ducobu
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Einstein Gravity ◽  
Parameter Family ◽  
Hairy Black Holes ◽  
Two Parameter ◽  
Bonnet Term

Einstein gravity supplemented by a scalar field nonminimally coupled to a Gauss–Bonnet term provides an example of model of scalar-tensor gravity where hairy black holes do exist. We consider the classical equations within a metric endowed with a NUT-charge and obtain a two-parameter family of nutty-hairy black holes. The pattern of these solutions in the exterior and the interior of their horizon is studied in some details. The influence of both — the hairs and the NUT-charge — on the lightlike and timelike geodesics is emphasized.

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