Are ultraspinning Kerr-Sen-
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 black holes always superentropic?

Wu, Di; Wu, Puxun; Yu, Hongwei; Wu, Shuang-Qing

doi:10.1103/physrevd.102.044007

Cited by 38 publications

(27 citation statements)

References 47 publications

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“…Thus, it provides the first counter-example to this inequality, and such a black hole is dubbed as "superentropic". Up to date, a lot of new ultra-spinning black hole solutions [24][25][26][27][28][29][30] have been obtained from the known common rotating AdS black holes. In addition, various aspects of the ultra-spinning black holes, including thermodynamical properties [19,24,[26][27][28][31][32][33][34], horizon geometry [20,24,26], Kerr/CFT correspondence [25][26][27], geodesic motion [35] and null hypersurface caustics [36][37][38], etc., have been widely explored.…”

Section: Jhep11(2021)031mentioning

confidence: 99%

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Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

2021

J. High Energ. Phys.

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By taking the ultra-spinning limit as a simple solution-generating trick, a novel class of ultra-spinning charged black hole solutions has been constructed from Chow’s rotating charged black hole with two equal-charge parameters in six-dimensional $$ \mathcal{N} $$ N = 4 gauged supergravity theory. We investigate their thermodynamical properties and then demonstrate that all thermodynamical quantities completely obey both the differential first law and the Bekenstein-Smarr mass formula. For the six-dimensional ultra-spinning Chow’s black hole with only one rotation parameter, we show that it does not always obey the reverse isoperimetric inequality, thus it can be either sub-entropic or super-entropic, depending upon the ranges of the mass parameter and especially the charge parameter. This property is obviously different from that of the six-dimensional singly-rotating Kerr-AdS super-entropic black hole, which always strictly violates the RII. For the six-dimensional doubly-rotating Chow’s black hole but ultra-spinning only along one spatial axis, we point out that it may also obey or violate the RII, and can be either super-entropic or sub-entropic in general.

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Section: Jhep11(2021)031mentioning

confidence: 99%

“…This character is very similar to that of the ultra-spinning Kerr-Sen-AdS 4 black hole previously studied in refs. [29,30].…”

Section: Jhep11(2021)031mentioning

confidence: 99%

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

2021

J. High Energ. Phys.

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“…In the Boyer-Lindquist coordinates, the KSdS black hole solutions deriving from the above equations of motion read [46][47][48]…”

Section: Geodesics Of Particles Around the Ksds Black Holementioning

confidence: 99%

“…In this paper, we will investigate the SCC for the Kerr-Sen black hole [45] with a positive cosmological constant, i.e., the Kerr-Sen-de Sitter (KSdS) black hole [46][47][48]. Compared with the Kerr-Newman-de Sitter black hole, the KSdS black hole has distinct characteristics.…”

Section: Introductionmentioning

confidence: 99%

Strong cosmic censorship in near-extremal Kerr-Sen-de Sitter spacetime

Zhang

Jiang

2021

Eur. Phys. J. C

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In this work, we first calculate equations of motion for particles in the Kerr-Sen-de Sitter black hole spacetime. Then, in the eikonal regime, we analytically obtain the quasi-normal resonant modes of massless neutral scalar field perturbation and find its imaginary part to be characterized by the surface gravity of a near-extremal Kerr-Sen-de Sitter black hole with the Cauchy horizon approaching the event horizon. We further show that the Penrose strong cosmic censorship conjecture is thus respected in this spacetime with dilaton scalar field and axion pseudoscalar field.

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“…In this paper, we will investigate the SCC for the Kerr-Sen black hole [45] with a positive cosmological constant, i.e., the Kerr-Sen-de Sitter (KSdS) black hole [46][47][48]. Comparing with the Kerr-Newman-de Sitter black hole, the KSdS black hole has distinct characteristics.…”

Section: Introductionmentioning

confidence: 99%

Strong cosmic censorship in near-extremal Kerr-Sen-de Sitter spacetime

Zhang,

Jiang

2021

Preprint

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We first calculate equations of motion for particles in the Kerr-Sen-de Sitter black hole spacetime. Then in the eikonal regime, we analytically obtain the quasi-normal resonant modes of massless neutral scalar field perturbation and find its imaginary part to be characterized by the surface gravity of the near-extremal Kerr-Sen-de Sitter black hole with Cauchy horizon approaching the event horizon. We further show that the Penrose strong cosmic censorship conjecture is thus respected in this spacetime with dilaton scalar field and axion pseudoscalar field.

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Are ultraspinning Kerr-Sen- AdS4 black holes always superentropic?

Cited by 38 publications

References 47 publications

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

Ultra-spinning Chow’s black holes in six-dimensional gauged supergravity and their properties

Strong cosmic censorship in near-extremal Kerr-Sen-de Sitter spacetime

Strong cosmic censorship in near-extremal Kerr-Sen-de Sitter spacetime

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