N-dimensional non-abelian dilatonic, stable black holes and their Born–Infeld extension

We find Einstein-Yang-Mills (EYM) black hole solutions endowed with massless scalar hair in the presence of a potential V (φ) as function of the scalar field φ. Choosing V (φ) = constant (or zero) sets the scalar field to vanish leaving us with the EYM black holes. Our class of black hole solutions is new so that they do not asymptotically go in general to any known limits. A particular case is given, however, which admits an asymptotically anti-de Sitter limit in 6-dimensional spacetime. The role of the potential V (φ) in making double bounces (i.e. both a minimum and maximum radii) on a domain wall universe is highlighted.

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“…R becomes a time-like coordinate. The asymptotic metrics (35) and (37) suggest also that we have no Lifshitz [11] asymptotes.…”

Section: Asymptotic Functionsmentioning

confidence: 75%

Double-bounce domain wall in Einstein–Yang–Mills-Scalar black holes

2013

Self Cite

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“…Let us first eliminate α from the equations, by using the solution given in (8). To do so we introduce new variables and parameters asã…”

Section: Stability Of the Thin-shell Wormholes For D ≥mentioning

confidence: 99%

“…where C (a) (b)(c) is the non-zero structure constants [8]. By this choice the YM invariant F reduces to a simple form…”

Section: Introductionmentioning

confidence: 99%

Higher-dimensional thin-shell wormholes in Einstein–Yang–Mills–Gauss–Bonnet gravity

Mazharimousavi¹,

Halilsoy²,

Amirabi³

2010

Class. Quantum Grav.

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We present thin-shell wormhole solutions in Einstein-Yang-Mills-Gauss-Bonnet (EYMGB) theory in higher dimensions d ≥ 5. Exact black hole solutions are employed for this purpose where the radius of thin-shell lies outside the event horizon. For some reasons the cases d = 5 and d > 5 are treated separately. The surface energy-momentum of the thin-shell creates surface pressures to resist against collapse and rendering stable wormholes possible. We test the stability of the wormholes against spherical perturbations through a linear energy-pressure relation and plot stability regions. Apart from this restricted stability we investigate the possibility of normal (i.e. non-exotic) matter which satisfies the energy conditions. For negative values of the Gauss-Bonnet (GB) parameter we obtain such physical wormholes.Dedicated to the memory of Rev. Ibrahim EKEN (1927 of Turkey.

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“…The structure constants have been determined in Ref. [50]. We should keep in mind, that the internal indices [a, b, ...] make no difference whether we write them in contravariant or covariant form.…”

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confidence: 99%

Magnetized topological black holes of dimensionally continued gravity

Ali

Saifullah

2019

Phys. Rev. D

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In this paper, a large family of topological black hole solutions of dimensionally continued gravity are derived. The action of Lovelock gravity is coupled to the exponential electrodynamics and the equations of motion are solved in the presence of a pure magnetic source. We work out the metric functions in terms of the parameter β of exponential electrodynamics, and magnetic charge. Further, we couple Lovelock gravity to power-Yang-Mills theory and construct black holes, in diverse dimensions, having Yang-Mills magnetic charge. We also discuss the asymptotic bahaviour of metric functions and curvature invariants at the origin for both the models. The thermodynamics of resulting magnetized black hole solutions in the framework of two different models is also studied. The thermodynamical quantities like Hawking temperature, entropy and specific heat capacity at constant charge are found and we show that the resulting quantities satisfy the first law of black hole thermodynamics. We also study the magnetized hairy black holes of dimensionally continued gravity.

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N-dimensional non-abelian dilatonic, stable black holes and their Born–Infeld extension

Cited by 25 publications

References 29 publications

Double-bounce domain wall in Einstein–Yang–Mills-Scalar black holes

Double-bounce domain wall in Einstein–Yang–Mills-Scalar black holes

Higher-dimensional thin-shell wormholes in Einstein–Yang–Mills–Gauss–Bonnet gravity

Magnetized topological black holes of dimensionally continued gravity

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