Black holes in anti–de Sitter spacetime: Quasinormal modes, tails, and flat spacetime

Cardoso, Vítor; Khanna, Gaurav

doi:10.1103/physrevd.91.024031

Cited by 10 publications

(4 citation statements)

References 46 publications

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“…t ∼ β: Characteristic zeros appear. Analogous zeros appear in Green's functions in Einstein gravity black holes in four bulk dimensions, and are associated with "ringing" behavior [19][20][21]. In our case, the number of zeros is small and the ringing thus rudimentary.…”

Section: Intermediate Temperatures: Numerical Resultsmentioning

confidence: 54%

Black holes from large N singlet models

Amado

Sundborg

Thorlacius

et al. 2018

J. High Energ. Phys.

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The emergent nature of spacetime geometry and black holes can be directly probed in simple holographic duals of higher spin gravity and tensionless string theory. To this end, we study time dependent thermal correlation functions of gauge invariant observables in suitably chosen free large N gauge theories. At low temperature and on short time scales the correlation functions encode propagation through an approximate AdS spacetime while interesting departures emerge at high temperature and on longer time scales. This includes the existence of evanescent modes and the exponential decay of time dependent boundary correlations, both of which are well known indicators of bulk black holes in AdS/CFT. In addition, a new time scale emerges after which the correlation functions return to a bulk thermal AdS form up to an overall temperature dependent normalization. A corresponding length scale was seen in equal time correlation functions in the same models in our earlier work.

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Section: Intermediate Temperatures: Numerical Resultsmentioning

confidence: 54%

Black holes from large N singlet models

Amado

Sundborg

Thorlacius

et al. 2018

J. High Energ. Phys.

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“…( 21) and Fig. (22). When compared with ω values computed with WKB approach given in Fig( 6), one can conclude that they are similar in behavior.…”

Section: Quasi Normal Modes Of Massless Fields From Null Geodesicsmentioning

confidence: 51%

“…Other than for experimental reasons, there are also several theoretical aspects of black holes which are studied by using QNM frequencies. Due to the famous AdS/CFT correspondence, many works have been devoted to study QNM's of black holes in anti-de Sitter space [22] [23]. Black hole quantum spectrum via QNM were presented by Corda in [24]: the black hole model used by Corda is somewhat similar to the semi-classical Bohr's model for the hydrogen atom.…”

Section: Introductionmentioning

confidence: 99%

Regular black holes in de Sitter universe: Scalar field perturbations and quasinormal modes

Fernando

2015

Int. J. Mod. Phys. D

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The purpose of this paper is to study quasinormal modes (QNM) of a regular black hole with a cosmological constant due to scalar perturbations. A detailed study of the QNM frequencies for the massless scalar field were done by varying the parameters of the theory such as the mass, magnetic charge, cosmological constant, and the spherical harmonic index. We have employed the sixth order WKB approximation to compute the QNM frequencies. We have also proved analytically that the l = 0 mode for the massless field reach a constant value at late times. We have approximated the near-extreme regular-de Sitter black hole potential with the Pöschl-Teller potential to obtain exact frequencies. The null geodesics of the regular-de Sitter black hole is employed to describe the QNM frequencies at the eikonal limit (l >> 1).

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“…The global mode is encoded in the envelope of this signal, and the only reason it is not more clearly visible is because the powerlaw tail sets in very quickly. Such behavior is similar to the setting in of global modes of anti-de Sitter spacetime, or of ultracompact exotic objects [12,13,55,56].…”

Section: |mentioning

confidence: 66%

Black hole binaries: Ergoregions, photon surfaces, wave scattering, and quasinormal modes

et al. 2018

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Closed photon orbits around isolated black holes are related to important aspects of black hole physics, such as strong lensing, absorption cross section of null particles and the way that black holes relax through quasinormal ringing. When two black holes are present -such as during the inspiral and merger events of interest for gravitational-wave detectors -the concept of closed photon orbits still exist, but its properties are basically unknown. With these applications in mind, we study here the closed photon orbits of two different static black hole binaries. The first one is the Majumdar-Papapetrou geometry describing two extremal, charged black holes in equilibrium, while the second one is the double sink solution of fluid dynamics, which describes (in a curved-spacetime language) two "dumb" holes. For the latter solution, we also characterize its dynamical response to external perturbations, and study how it relates to the photon orbits. In addition, we compute the ergoregion of such spacetime and show that it does not coincide with the event horizon.

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Black holes in anti–de Sitter spacetime: Quasinormal modes, tails, and flat spacetime

Cited by 10 publications

References 46 publications

Black holes from large N singlet models

Black holes from large N singlet models

Regular black holes in de Sitter universe: Scalar field perturbations and quasinormal modes

Black hole binaries: Ergoregions, photon surfaces, wave scattering, and quasinormal modes

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