Black holes with a cloud of strings in pure Lovelock gravity

Toledo, J. M.; Bezerra, V. B.

doi:10.1140/epjc/s10052-019-6628-4

Cited by 38 publications

(36 citation statements)

References 48 publications

(52 reference statements)

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“…In some cases it is considered one single value of n ≥ 1 plus the n = 0 term, i.e. L = L 0 + L n , as for example in references [3,35,36] . For simplicity, in this work we take a single value of L n without the L 0 term, as for example in references [38,42] .…”

Section: Pure Lovelock Casementioning

confidence: 99%

A way of decoupling gravitational sources in pure Lovelock gravity

Estrada

2019

Eur. Phys. J. C

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We provide an algorithm that shows how to decouple gravitational sources in Pure Lovelock gravity. This method allows to obtain several new and known analytic solutions of physical interest in scenarios with extra dimensions and with presence of higher curvature terms. Furthermore, using our method, it is shown that applying the minimal geometric deformation to the Anti de Sitter space time it is possible to obtain regular black hole solutions.PACS. PACS-key discribing text of that key -PACS-key discribing text of that key

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Section: Pure Lovelock Casementioning

confidence: 99%

A way of decoupling gravitational sources in pure Lovelock gravity

Estrada

2019

Eur. Phys. J. C

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“…This theory is known as Pure Lovelock. See for instance [24][25][26][27]. This theory, for Λ > 0, has a unique de Sitter ground state ∀n.…”

Section: Lovelock Gravitymentioning

confidence: 99%

Regular black holes with $$\varLambda >0$$ and its evolution in Lovelock gravity

Estrada

Aros

2019

Eur. Phys. J. C

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In this work it is shown that the thermodynamics of regular black holes with a cosmological horizon, which are solutions of Lovelock gravity, determines that they must evolve either into a state where the black hole and cosmological horizons have reached thermal equilibrium or into an extreme black hole geometry where the black hole and cosmological horizons have merged. This differs from the behavior of Schwarzschild de Sitter geometry which evolves into a de Sitter space, the ground state of the space of solutions. This occurs due to a phase transition of the heat capacity of the black hole horizon. To perform that analysis it is shown that at each horizon a local first law of thermodynamics can be obtained from the gravitational equations.

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“…Later, the rotating BH with a cloud of strings was investigated [57,58]. Then, the study of a cloud of strings was extended to modified theories of gravity such as Lovelock gravity [59,60]. Recently, the exact solution of Schwarzschild black hole surrounded by a cloud of strings in Rastall gravity is obtained in [61].…”

Section: Introductionmentioning

confidence: 99%

Shadow and Photon Sphere of Black Hole in Clouds of Strings and Quintessence

He,

Tao,

Xue

et al. 2021

Preprint

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In this work, we study the shadow and photon sphere of the black bole in clouds of strings and quintessence with static and infalling spherical accretions. We obtain the geodesics of the photons near a black hole with different impact parameters b. The string clouds model and quintessence influence the specific intensity by affecting the geodesic and the average radial position of photons.And the range of string clouds parameter a is constrained to ensure that the shadow can be observed. Moreover, we use a model of the photon emissivity j(ν e ) to get the specific intensities.The light sources in the accretion follow a normal distribution with an attenuation factor γ. The shadow with static spherical accretion is plotted. The apparent shape of the shadow is a perfect circle, and the value of γ affects the brightness of the photon sphere. We investigate the profile and specific intensity of the shadows with static and infalling spherical accretions respectively. The interior of the shadows with an infalling spherical accretion will be darker than that with the static spherical accretion, and the specific intensity with both static and infalling spherical accretion gradually converges.

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Black holes with a cloud of strings in pure Lovelock gravity

Cited by 38 publications

References 48 publications

A way of decoupling gravitational sources in pure Lovelock gravity

A way of decoupling gravitational sources in pure Lovelock gravity

Regular black holes with $$\varLambda >0$$ and its evolution in Lovelock gravity

Shadow and Photon Sphere of Black Hole in Clouds of Strings and Quintessence

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