Quasi-topological Electromagnetism: Dark Energy, Dyonic Black Holes, Stable Photon Spheres and Hidden Electromagnetic Duality

Liu, Hai-Shan; Mai, Zhan-Feng; Li, Yue-Zhou; Lü, H.

doi:10.48550/arxiv.1907.10876

Cited by 17 publications

(36 citation statements)

References 27 publications

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“…As for black holes and wormholes, an intriguing aspect about gravitational lensing is that it gives rise to detectable shadows, which are casted by the 'photon sphere' [39][40][41][42][43][44]. Photon spheres are typically unstable, but black holes satisfying the dominant energy condition can also allow to have stable photon sphere [45].…”

Section: Introductionmentioning

confidence: 99%

Charged Ellis wormhole and black bounce

Huang

Yang

2019

Phys. Rev. D

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By replacing the scalar φ with iφ in the solution constructed in Ref [1], we obtain electrically-charged wormhole and black hole solutions in the Einstein-Maxwell-scalar theory, in which the scalar is a phantom field coupled to the Maxwell field non-minimally.Our solutions are simpler than the previously-known charged wormholes in the Einstein-Maxwell-dilaton theory in that both the scalar and the radius of the foliating sphere of our solutions are independent of electric charge. The wormhole solution has two asymptotically flat regions and reduces to Ellis wormhole when the charge is zero. We draw the embedding diagrams for the wormholes and demonstrate that the two sides are asymmetric. As the charge increases, horizons will appear, and the wormhole becomes a black hole, with no curvature singularity but a wormhole throat or a bounce. We analyze black hole thermodynamics and the causal structure. We also determine the photon spheres of both the wormhole and the black hole and discuss their observable characteristics.

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Section: Introductionmentioning

confidence: 99%

Charged Ellis wormhole and black bounce

Huang

Yang

2019

Phys. Rev. D

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“…It is easy to check that the quasi-topological electromagnetic Lagrangian L Q has no influence on the Maxwell equation and energy-momentum tensor with the ansatz of global polarization [50].…”

Section: Thermodynamics Of Dyonic Black Holementioning

confidence: 99%

“…Quite recently, the black hole solution with a quasi-topological electromagnetism gains great interest [50]. This theory is a new higher-order extension constructed with the bilinear norm of the Maxwell theory.…”

Section: Introductionmentioning

confidence: 99%

Triple points and novel phase transitions of dyonic AdS black holes with quasitopological electromagnetism

Li,

Wang,

Wei

2022

Preprint

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The quasi-topological electromagnetism has an important influence on the strong gravity of the dyonic black hole. For example three photon spheres with one being stable are found and which is wished to be tested with the observation of EHT. In this paper, we mainly concern the thermodynamics and phase transition for the dyonic AdS black hole when the quasi-topological electromagnetism is included. Quite different from the black hole solution without the quasi-topological electromagnetism, we observe a triple point phase structure by varying the coupling parameters. Of particular interest, in some certain parameter values, two separated coexistence curves are present, which is also an additional novel phase structure that absents in the black hole solution without the quasi-topological electromagnetism. While the critical exponents share the same values with the mean field theory. These results uncover the intriguing properties of the dyonic AdS black holes with quasi-topological electromagnetism from a thermodynamic point of view.

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“…being composed by the original electric Maxwell field strength, which lives on the brane M d and the magnetic p-form field strength H B 1 ...Bp , which is demanded to live exclusively on the internal manifold K p . This theory has been dubbed Quasitopological Electromagnetism (QTE) and has been recently explored in the context of black hole solutions and cosmology [36,37].…”

Section: Model and Field Equationsmentioning

confidence: 99%

“…We start with Einstein-Maxwell theory, which can be properly compactified by considering the direct coupling of the brane electric field with magnetic p-forms living on the internal manifold, this along the lines of a submodel of [32] recently dubbed Quasitopological electromagentism [36,37] 6 . Once the compatification is achieved, we move into the construction of the corresponding black p-branes solutions.…”

Section: Introductionmentioning

confidence: 99%

Quasitopological electromagnetism: Reissner-Nordström black strings in Einstein and Lovelock gravities

Cisterna,

Henríquez-Báez,

Mora

et al. 2021

Preprint

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In this work, we provide consistent compactifications of Einstein-Maxwell and Einstein-Maxwell-Lovelock theories on direct product spacetimes of the form M D = M d × K p , where K p is a Euclidean internal manifold of constant curvature. For these compactifications to take place, it is required the distribution of a precise flux of p-forms over the internal manifold. The dynamic of the p-forms are demanded to be controlled by two types of interaction. First, by specific couplings with the curvature tensor and, second, by a suitable interaction with the electromagnetic field of the d-dimensional brane, the latter being dictated by a modification of the recently proposed theory of Quasitopological Electromagnetism. The field equations of the corresponding compactified theories, which are of second order, are solved and general homogenous charged black p-branes are constructed. We explicitly provide homogenous Reissner-Nordström black strings and black p-branes in Einstein-Maxwell theory and homogenous charged Boulware-Deser black p-branes for quadratic and cubic Maxwell-Lovelock gravities.

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Quasi-topological Electromagnetism: Dark Energy, Dyonic Black Holes, Stable Photon Spheres and Hidden Electromagnetic Duality

Cited by 17 publications

References 27 publications

Charged Ellis wormhole and black bounce

Charged Ellis wormhole and black bounce

Triple points and novel phase transitions of dyonic AdS black holes with quasitopological electromagnetism

Quasitopological electromagnetism: Reissner-Nordström black strings in Einstein and Lovelock gravities

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