Dark energy effects on charged and rotating black holes

Belhaj, A.; Balali, A. El; Hadri, W. El; Moumni, H. El; Sedra, M. B.

doi:10.1140/epjp/i2019-12803-y

Cited by 17 publications

(11 citation statements)

References 75 publications

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“…where indicates the emission frequency [34]. It is noted that T out is the Hawking temperature for the Schwarzschild-Tangherlini with DE [35]. Such a temperature reads as…”

Section: Energy Emission Ratementioning

confidence: 99%

Deflection Angle and Shadow Behaviors of Quintessential Black Holes in arbitrary Dimensions

Belhaj,

Benali,

Balali

et al. 2020

Preprint

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Motivated by M-theory/superstring inspired models, we investigate certain behaviors of the deflection angle and shadow geometrical shapes of higher dimensional quintessential black holes associated with two values of the dark energy (DE) state parameter, being ω = − 1 3 and ω = − 2 3 . Concretely, we derive the geodesic equation of photons on such backgrounds. Thanks to the Gauss-Bonnet theorem associated with the optical metric, we compute the leading terms of the deflection angle in the so-called weak-limit approximation. After that, we inspect the effect of DE and the space-time dimension d on the calculated optical quantities. Introducing DE via the field intensity c and the state parameter ω, we find that the shadow size and the deflection angle increase by increasing values of the field intensity c. However, we observe that the high dimensions decrease such quantities for ω-models exhibiting similar behaviors. Then, we consider the effect of the black hole charge, on these optical quantities, by discussing the associated behaviors. The present investigation recovers certain known results appearing in ordinary four dimensional models.

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“…where indicates the emission frequency [34]. It is noted that T out is the Hawking temperature for the Schwarzschild-Tangherlini with DE [35]. Such a temperature reads as…”

Section: Energy Emission Ratementioning

confidence: 99%

Deflection Angle and Shadow Behaviors of Quintessential Black Holes in arbitrary Dimensions

Belhaj,

Benali,

Balali

et al. 2020

Preprint

Self Cite

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“…Effectively, the quintessence, with intensity α, corresponding to the range −1, − 1 3 considered as a scalar field having negative pressure has been introduced to investigate the DE effects on the black hole physics [26,27,28]. Among others, it has been suggested that DE can be considered as a cooling mechanism affecting the black hole thermodynamical behaviors [29,30].…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

Kerr-AdS black hole behaviors from dark energy

Belhaj

Balali

Hadri

et al. 2020

Int. J. Mod. Phys. D

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We investigate the critical behaviors of four-dimensional Kerr-AdS black holes from quintessential Dark Energy (DE) contributions. Using a moduli space, coordinated by the DE state parameter [Formula: see text] and the quintessence field intensity [Formula: see text], we deal with three different [Formula: see text]-models. By elaborating analytical formulas of relevant thermodynamical quantities denoted by [Formula: see text], we find significant similarities and distinctions. Precisely, for the [Formula: see text]-model, we show that DE contributions stabilize such black holes. For the [Formula: see text]-model, however, we get a reversed DE effect. In the [Formula: see text]-model, Kerr-AdS black holes reveal a resistance regarding the usual DE effects. Exploiting the explicit formulas of such thermodynamical quantities, we give certain physical interpretations for thermal behaviors. Although such relevant distinctions, we show that the [Formula: see text]-models involve similar universal ratios associated with certain critical thermodynamical quantities. Then, we analyze the photon orbits in the presence of DE.

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“…These questions may concern the dark sector associated with the dark matter [23] and the dark energy of late-time cosmology [24]. As a way to investigate the models dealing with such as a sector, a scalar field is usually introduced [25,26]. Concretely, the quintessence remains the simplest and the promising one [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Optical Behaviors of Quintessential Hayward-AdS Black Holes

Belhaj,

Benali,

Moumni

et al. 2022

Preprint

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Motivated by Dark Energy (DE) activities, we study certain physical behaviors of the quintessential Hayward-AdS black holes in four dimensions. We generalize some physical properties of the ordinary Hayward AdS black holes without the dark sector. We elaborate a study in terms of the new quantities c and ω q parametrizing the dark sector moduli space. We investigate the effect of such parameters on certain thermodynamic and optical aspects. To show the quintessential thermodynamic behaviors, we first reconsider the critical properties of the ordinary solutions. We find that the equation of state predicts a universal ratio given by χ 0 = Pcvc Tc = 27−3 √ 6 50

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Dark energy effects on charged and rotating black holes

Cited by 17 publications

References 75 publications

Deflection Angle and Shadow Behaviors of Quintessential Black Holes in arbitrary Dimensions

Deflection Angle and Shadow Behaviors of Quintessential Black Holes in arbitrary Dimensions

Kerr-AdS black hole behaviors from dark energy

Thermodynamic and Optical Behaviors of Quintessential Hayward-AdS Black Holes

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