Hidden conformal symmetry for Kerr-Newman-NUT-AdS black holes

Sakti, Muhammad Fitrah Alfian Rangga; Ghezelbash, A. M.; Suroso, Agus; Zen, Freddy P.

doi:10.1016/j.nuclphysb.2020.114970

Cited by 29 publications

(22 citation statements)

References 34 publications

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“…Such an approximation was used before for the quartic metric function of the Kerr-Newman-AdS [29,30], Kerr-NUT-AdS [31], and Kerr-Newman-NUT-AdS [38,39] black holes. Using (12), the radial equation (11) reduces to…”

Section: A Hidden Conformal Symmetrymentioning

confidence: 99%

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Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity

Sakti,

Suroso,

Sulaksono

et al. 2021

Preprint

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The quantum gravitational effects on the region near the horizon may alter the black hole's horizon drastically. The horizon becomes partially reflective, portrayed by a quantum membrane. With this modification, the object can be considered as an exotic compact object (ECO). Therefore, the existence of a quantum membrane makes the properties of the black holes differ from those of ECOs. Furthermore, quantum effects on the strong gravitational regime may also give rise to a nonconserved matter tensor that can be described phenomenologically using Rastall theory of gravity.In this work, we study the properties of the black holes and ECOs within Rastall theory of gravity using Kerr/CFT correspondence. We systematically investigate the properties of the most general rotating black hole solutions in Rastall gravity, i.e., Kerr-Newman-NUT-Kiselev black holes, and reveal its hidden conformal symmetry. The Cardy microscopic entropy formula and absorption crosssections from 2D CFT are computed and then matched with gravity calculation. We also extend the dual CFT analysis for studying the properties of ECOs that resemble Kerr-Newman-NUT-Kiselev black holes in Rastall gravity to see the role of the reflective quantum membrane. The existence of the quantum membrane leads to the appearance of the gravitational echoes in ringdown signal from the gravitational wave observations that is manifested as an oscillatory feature on the absorption cross-section. We compute the absorption cross-section and quasi-normal modes in the dual CFT picture for ECOs. We also compare the absorption cross-section of ECOs to that of black holes. We find that the Rastall coupling constant plays a significant role in the absorption cross-section of both objects. We obtain that the echo time delay of the ringdown signal depends explicitly on the Rastall coupling constant. This coupling constant may play the role to recover the correction on time delay that is believed as a non-linear physics effect. Henceforth, the signature of the Rastall gravity can be probed from the time-delay observation. Therefore, the echo time-delay observation could be used to constrain the coupling constant of Rastall gravity.

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Section: A Hidden Conformal Symmetrymentioning

confidence: 99%

“…For a review regarding this whole Kerr/CFT computation can be referred to Ref. [5], while it has also been applied in several black hole solutions in extremal [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] and generic [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] cases.…”

Section: Introductionmentioning

confidence: 99%

Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity

Sakti,

Suroso,

Sulaksono

et al. 2021

Preprint

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“…However, the NUT parameter is not associated to any symmetry of the spacetime, and yet it also leads to some peculiar properties in the spacetime, such as conical singularity and the regular invariants such as squared Riemann tensor, at the origin of the coordinate system. Nevertheless, spacetimes with the NUT parameter has helped to shape our understanding of some gravitational and thermodynamical aspects of gravity theories [2][3][4][5][6][7][8][9][10][11][12][13][14] The Kerr-Newman spacetime is a well known black hole solution in the Einstein-Maxwell theory. The solutions can a e-mail: amg142@campus.usask.ca (corresponding author) b e-mail: haryanto.siahaan@unpar.ac.id be extended to contain the NUT parameter, and usually referred to, as the Kerr-Newman-Taub-NUT spacetimes.…”

Section: Introductionmentioning

confidence: 99%

“…Fig 12. The angular velocity of the horizon as function of a, b (left) and l, b (right), where we set the other black hole parameters to a set of fixed numbers…”

mentioning

confidence: 99%

Magnetized Kerr–Newman–Taub-NUT spacetimes

Ghezelbash

Siahaan

2021

Eur. Phys. J. C

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“…Since the conformal symmetry of the non-extremal Kerr solution is only discernable by studying the dynamics rather than the background geometry alone, this feature is referred to as a hidden conformal symmetry. A corresponding near-region analysis has now been applied to many non-extremal black hole systems, and hidden conformal symmetry has thus been shown to be a generic feature of black hole backgrounds [10][11][12]. The physical connection between this near-region approach of finding hidden conformal symmetry and black hole soft hair [13] is treated in [9,14,15].…”

mentioning

confidence: 99%

Hidden Conformal Symmetries from Killing Towers with an Application to Large-D/CFT

Keeler,

Martin,

Priya

2021

Preprint

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We generalize the notion of hidden conformal symmetry in Kerr/CFT to Kerr-(A)dS black holes in arbitrary dimensions. We build the SL(2, R) generators directly from the Killing tower, whose Killing tensors and Killing vectors enforce the separability of the equations of motion. Our construction amounts to an explicit relationship between hidden conformal symmetries and Killing tensors: we use the Killing tower to build a novel tensor equation connecting the SL(2, R) Casimir with the radial Klein-Gordon operator. For asymptotically flat black holes in four and five dimensions we recover previously known results that were obtained using the "near-region" limit and the monodromy method. We then perform a monodromy evaluation of the Klein-Gordon scalar wave equation for all Kerr-(A)dS black holes, finding explicit forms for the zero mode symmetry generators. We also extend this analysis to the large-dimensional Schwarzschild black hole as a step towards buliding a Large-D/CFT correspondence.

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Hidden conformal symmetry for Kerr-Newman-NUT-AdS black holes

Cited by 29 publications

References 34 publications

Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity

Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity

Magnetized Kerr–Newman–Taub-NUT spacetimes

Hidden Conformal Symmetries from Killing Towers with an Application to Large-D/CFT

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