Geometry outside of acoustic black holes in (
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)-dimensional spacetime

Wang, Qingbing; Ge, Xian-Hui

doi:10.1103/physrevd.102.104009

Cited by 18 publications

(5 citation statements)

References 28 publications

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“…For acoustic black holes embedded in the AdS space, we can obtain a metric expressed by the Hadamard product derived from the relativistic Gross-Pitaevskii theory or simply from the Yang-Mills theory [27]. Then, the (2+1)-dimensional acoustic black hole geometry of curved spacetime can be expressed as a product of the background metric and the acoustic metric [27,28]…”

Section: Introductionmentioning

confidence: 99%

“…acoustic-AdS black hole, which has two causally disconnected boundaries, one can be interpreted as an identical copy of the thermofield double state on the second boundary [30]. In [27,28], some of us considered the realization of acoustic black holes in curved spacetime. Since such relativistic analogue black holes may be realized in high energy process, it is interesting to examine that how two acoustic black holes are first entangled from the beginning and how their mutual information decays away later.…”

Section: Introductionmentioning

confidence: 99%

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Scrambling time for analogue black holes embedded in AdS space

Wang,

Yu,

2022

Preprint

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We propose a gedanken experiment on realizing thermofield double state (TFD) by using analog black holes and provide an approach to test the scrambling time. Through this approach, we demonstrate clearly how shock wave changes the TFD state as time evolves. As the whole system evolves forward in time, the perturbation of spacetime geometry will increase exponentially. Finally, it will destroy the entanglement between the two states of the thermal field, and the mutual information between them is reduced to zero in the time scale of scrambling. The results show that for perturbations of analogue black holes embedded in AdS space, the scale of the scrambling time is closely related to the logarithm of entropy of the black hole. The results provide further theoretical argument for the scrambling time, which can be further falsified in experiments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Scrambling time for analogue black holes embedded in AdS space

Wang,

Yu,

2022

Preprint

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“…We will take AdS radius L to be 1 later. We write down (2 + 1)dimensional acoustic black hole metric (2.10) embedded in AdS-Schwarzschild spacetime (4.2) as follows [19,38]…”

Section: (2 + 1)-dimensional Acoustic Black Holes Embedded In Ads-sch...mentioning

confidence: 99%

Analogue of the pole-skipping phenomenon in acoustic black holes

Yuan

2022

Eur. Phys. J. C

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The pole-skipping phenomenon is a special property of the retarded Green’s function of black hole perturbations. We turn to its analog in acoustic black holes, which may relate to experiments. The frequencies of these special points are located at negative integer (imaginary) Matsubara frequencies $$\omega =-i2\pi Tn$$ ω = - i 2 π T n , which are consistent with the imaginary frequencies of quasinormal modes (QNMs). This implies that the lower-half plane pole-skipping phenomena have the same physical meaning as the imaginary part of QNMs, which represents the dissipation of perturbation of acoustic black holes and is related to the instability time scale of perturbation.

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“…The thermodynamic-like description of the two-dimensional acoustic black hole can be seen in [28]. The particle dynamics in the acoustic spacetime was also studied in [29]. Meanwhile, from the view of experiments, Lahav constructed a sonic black hole in Bose-Einstein condensate system [30]; Then the analogue Hawking radiation and corresponding Hawking temperature was observed [31,32].…”

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confidence: 99%

Shadow and near-horizon characteristics of the acoustic charged black hole in curved spacetime

Ling,

Guo,

Liu

et al. 2021

Preprint

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In this paper, we first analyze the horizon structure of the acoustic charged black hole in curved spacetime, and then study its acoustic shadow as well as the near-horizon characteristics including the quasi-normal modes (QNM) frequencies and analogue Hawking radiation. We find that the radius of the acoustic shadow for acoustic charged black hole is larger than that for Reissner-Nordström (RN) black hole, and both of them are suppressed by increasing the black hole charge because their related outer horizons become smaller. Then the QNM frequencies under scalar field perturbation and its eikonal limit are computed via numeric method and acoustic shadow, respectively. We find that the acoustic charged black hole is stable under the perturbation and the QNM frequencies are much weaker than that for the astrophysical black hole. Moreover, as the tuning parameter increases, the perturbation oscillates more milder and its damping time becomes longer, while as the charge increases, the oscillation is enhanced slightly and the perturbation decays a little faster which is different from that in RN black hole. Finally, we numerically study the analogue Hawking radiation. We find that the grey-body factor and energy emission rate are suppressed by the angular number and the charge, but they do not monotonously depend on the tuning parameter in the acoustic charged black hole. The behavior of the energy emission rate affected by the parameters could be explained by the dependent behavior of the Hawking temperature. We expect that our results could shed light to the study of black holes in both theoretical and experimental perspectives.

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Geometry outside of acoustic black holes in ( 2+1 )-dimensional spacetime

Cited by 18 publications

References 28 publications

Scrambling time for analogue black holes embedded in AdS space

Scrambling time for analogue black holes embedded in AdS space

Analogue of the pole-skipping phenomenon in acoustic black holes

Shadow and near-horizon characteristics of the acoustic charged black hole in curved spacetime

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