New black hole solutions in Brans-Dicke theory of gravity

Abstract The infinite derivative theory of gravity is a generalization of Einstein gravity with many interesting properties, but the black hole solutions in this theory are still not fully understood. In the paper, we concentrate on studying the charged black holes in such a theory. Adding the electromagnetic field part to the effective action, we show how the black hole solutions around the Reissner-Nordstr{\"o}m metric can be solved perturbatively and iteratively. We further calculate the corresponding temperature, entropy and electrostatic potential of the black holes and verify the first law of thermodynamics.

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Holographic complexity in general quadratic curvature theory of gravity

The European Physical Journal C ◽

10.1140/epjc/s10052-020-08503-9 ◽

2020 ◽

Vol 80 (10) ◽

Author(s):

Ahmad Ghodsi ◽

Saeed Qolibikloo ◽

Saman Karimi

Keyword(s):

Growth Rate ◽

Black Hole ◽

Singular Point ◽

Late Time ◽

Divergent Part ◽

Time Approximation ◽

A Value ◽

Curvature Theory ◽

Theory Of Gravity ◽

Black Hole Solutions

AbstractIn the context of CA conjecture for holographic complexity, we study the action growth rate at late time approximation for general quadratic curvature theory of gravity. We show how the Lloyd’s bound saturates for charged and neutral black hole solutions. We observe that a second singular point may modify the action growth rate to a value other than the Lloyd’s bound. Moreover, we find the universal terms that appear in the divergent part of complexity from computing the bulk and joint terms on a regulated WDW patch.

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NAT black holes

The European Physical Journal C ◽

10.1140/epjc/s10052-019-7455-3 ◽

2019 ◽

Vol 79 (11) ◽

Cited By ~ 1

Author(s):

Metin Gürses ◽

Yaghoub Heydarzade ◽

Çetin Şentürk

Keyword(s):

Black Holes ◽

Black Hole ◽

Physical Properties ◽

Black Hole Thermodynamics ◽

Massless Particles ◽

Tensor Theory ◽

Theory Of Gravity ◽

Black Hole Solutions

AbstractWe study some physical properties of black holes in Null Aether Theory (NAT) – a vector-tensor theory of gravity. We first review the black hole solutions in NAT and then derive the first law of black hole thermodynamics. The temperature of the black holes depends on both the mass and the NAT “charge” of the black holes. The extreme cases where the temperature vanishes resemble the extreme Reissner–Nordström black holes. We also discuss the contribution of the NAT charge to the geodesics of massive and massless particles around the NAT black holes.

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Black hole solutions in modified gravity induced by quantum metric fluctuations

Physics of the Dark Universe ◽

10.1016/j.dark.2020.100756 ◽

2021 ◽

Vol 31 ◽

pp. 100756

Author(s):

Jin-Zhao Yang ◽

Shahab Shahidi ◽

Tiberiu Harko ◽

Shi-Dong Liang

Keyword(s):

Black Hole ◽

Modified Gravity ◽

Black Hole Solutions ◽

Metric Fluctuations

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

Journal of High Energy Physics ◽

10.1007/jhep04(2021)047 ◽

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.

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Regular and black hole solutions in the Einstein–Skyrme theory with negative cosmological constant

Classical and Quantum Gravity ◽

10.1088/0264-9381/22/17/015 ◽

2005 ◽

Vol 22 (17) ◽

pp. 3561-3573 ◽

Cited By ~ 17

Author(s):

Noriko Shiiki ◽

Nobuyuki Sawado

Keyword(s):

Black Hole ◽

Cosmological Constant ◽

Negative Cosmological Constant ◽

Black Hole Solutions

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Spinning boson stars and hairy black holes with nonminimal coupling

International Journal of Modern Physics D ◽

10.1142/s0218271818430095 ◽

2018 ◽

Vol 27 (11) ◽

pp. 1843009 ◽

Cited By ~ 5

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.

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