Linear instability of charged massless scalar perturbation in regularized 4D charged Einstein-Gauss-Bonnet anti de-Sitter black holes *

Liu, Peng; Niu, Chao; Zhang, Cheng-Yong

doi:10.1088/1674-1137/abd01d

Cited by 10 publications

(4 citation statements)

References 97 publications

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“…The PS method, which is a fully numerical technique, is highly effective in determining QNFs. It has been widely utilized in various studies [29,30,64,[66][67][68][69][70][71][72][73], particularly for identifying high overtone modes [30]. The fundamental principle of the PS approach is to discretize the differential equations and subsequently solve the resultant generalized eigenvalue equations.…”

Section: Pseudo-spectral Methodsmentioning

confidence: 99%

“…Therefore, in this paper, we primarily utilize the WKB method as a cross-check, specifically for determining fundamental modes. For higher overtones, we commonly resort to the PS method-a fully numerical approach renowned for its power in determining QNFs [29,30,64,[66][67][68][69][70][71][72][73]. Nevertheless, it is essential to note that, like many numerical methods, the PS method may be time-consuming compared to the semi-analytic WKB method.…”

Section: Quasinormal Modesmentioning

confidence: 99%

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Quasinormal modes of a regular black hole with sub-Planckian curvature

Zhang,

Gong,

et al. 2024

Eur. Phys. J. C

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This paper explores the properties of the quasinormal modes (QNMs) of a regular black hole (BH) characterized by a Minkowski core and sub-Planckian curvature. When focusing on a special case, this regular BH exhibits identical large-scale behavior with the Hayward BH and some loop quantum gravity corrected (LQG-corrected) BH. A notable characteristic of the QNMs in this regular BH is the pronounced outburst of overtones when compared to the Schwarzschild BH (SS-BH). This outburst can be attributed to the deviation from the SS-BH in the near-horizon geometry region due to the quantum gravity effect. Furthermore, we compare the QNM properties of the regular BH with those of the Hayward BH and the LQG-corrected BH. A similar phenomenon of overtone outburst is observed in the modes of the overtone. As a conclusion, the QNMs may be a powerful tool for detecting the quantum gravity effect and distinguishing different BH models.

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Section: Pseudo-spectral Methodsmentioning

confidence: 99%

Section: Quasinormal Modesmentioning

confidence: 99%

Quasinormal modes of a regular black hole with sub-Planckian curvature

Zhang,

Gong,

et al. 2024

Eur. Phys. J. C

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“…Numerous techniques have been devised for determining QNMs, with the pseudospectral approach being a potent numerical instrument. This method has been successfully applied in various models to compute QNFs (see, e.g., [20][21][22][24][25][26][27][28][29][30][31][32]).…”

Section: Pseudospectral Methodsmentioning

confidence: 99%

Quasinormal modes and ringdown waveforms of a Frolov black hole

Song,

Gong,

et al. 2024

Commun. Theor. Phys.

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In this paper, we investigate the scalar perturbation over the Frolov black hole (BH), which is a regular BH induced by the quantum gravity effect. The quasinormal frequencies (QNFs) of scalar field always consistently reside in the lower half-plane, and its time-domain evolution demonstrates a decaying behavior, with the late-time tail exhibiting a power-law pattern. These observations collectively suggest the stability of the Frolov BH against scalar perturbations. Additionally, our study reveals that quantum gravity effects lead to slower decay modes. For the case of the angular quantum number $l=0$, the oscillation exhibits non-monotonic behavior with the quantum gravity parameter $\alpha_0$. However, once $l\geq 1$, the angular quantum number surpasses the influence of the quantum gravity effect.

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“…For the pseudospectral method, we can refer to [45] and also see [46][47][48][49][50][51][52][53][54] for the application in the calculation of QNMs in the black hole physics. We justify our findings by further cross-checking the results with the Wentzel-Kramers-Brillouin (WKB) method, which is a widely-used and well-understood method, and analyse the error between the WKB and pseudosperctral methods.…”

Section: Quasi-normal Modesmentioning

confidence: 99%

Quasinormal modes and Hawking radiation of a charged Weyl black hole

Fu¹,

Zhang²,

Liu³

et al. 2022

Preprint

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We study the scalar field system over a charged Weyl black hole, which is depicted by a parameter λ. Under the perturbation of scalar field, the system is unstable for zero angular number, but stable for non-zero one. We are specially interested in the propeties of QNM spectra, dynamical evolution and Hawking radiation for the modes with non-zero angular number, which discloses some peculiar properties of this charged Weyl black hole. What is remarkable is that an exponential decay obviously emerges in the phase of the ringing tail as λ increases. It indicates that the characteristic parameter λ has an obvious imprint on the ringing tail, which is expected to be detected by future observations. Other effects of the parameter λ on the QNM spectra, dynamical evolution and Hawking radiation have also been explored.

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Linear instability of charged massless scalar perturbation in regularized 4D charged Einstein-Gauss-Bonnet anti de-Sitter black holes *

Cited by 10 publications

References 97 publications

Quasinormal modes of a regular black hole with sub-Planckian curvature

Quasinormal modes of a regular black hole with sub-Planckian curvature

Quasinormal modes and ringdown waveforms of a Frolov black hole

Quasinormal modes and Hawking radiation of a charged Weyl black hole

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