Anomalous decay rate of quasinormal modes

Lagos, Macarena; Ferreira, Pedro G.; Tattersall, Oliver J.

doi:10.1103/physrevd.101.084018

Cited by 28 publications

(32 citation statements)

References 50 publications

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“…(28) of ref. [14]. For ΛM 2 = 0.04 and n P S = 0 we obtain from (3.17) the value m c M = 0.1716 and for n P S = 1 we obtain m c M = 0.1994, which agrees with the numerical results shown in figure 2 for high values of .…”

Section: Jhep08(2020)120supporting

confidence: 88%

“…This anomalous behaviour is depending on whether the mass of the scalar field exceeds a critical value or not. This anomalous decay rate for small mass scale of the scalar field was recently discussed in [14].…”

Section: Introductionmentioning

confidence: 59%

“…and exhibit an inverted behavior. For Λ = 0 the result of [14] is recovered. We note that this inversion in the behaviour of the width does not happen exactly at the same critical value of the mass where imaginary part of the QNFs exhibits an inverted behaviour, as in ref.…”

Section: Jhep08(2020)120mentioning

confidence: 88%

“…Now, we perform a analysis similar to ref. [14] to show an inverted behavior of the width of the potential in the case of Schwarzschild de-Sitter black hole. The coefficients V (i) of the Taylor expansion of the potential around its maximum in the large expansion JHEP08(2020)120 can be written as…”

Section: Jhep08(2020)120mentioning

confidence: 95%

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Anomalous decay rate of quasinormal modes in Schwarzschild-dS and Schwarzschild-AdS black holes

Aragón

González

Papantonopoulos

et al. 2020

J. High Energ. Phys.

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Recently an anomalous decay rate of the quasinormal modes of a massive scalar field in Schwarzschild black holes backgrounds was reported in which the longest-lived modes are the ones with higher angular number, for a scalar field mass smaller than a critical value, while that beyond this value the behaviour is inverted. In this work, we extend the study to other asymptotic geometries, such as, Schwarzschild-de Sitter and Schwarzschild-AdS black holes. Mainly, we found that such behaviour and the critical mass are present in the Schwarzschild-de Sitter background. Also, we found that the value of the critical mass increases when the cosmological constant increases and also when the overtone number is increasing. On the other hand, despite the critical mass is not present in Schwarzschild-AdS black holes backgrounds, the decay rate of the quasinormal modes always exhibits an anomalous behaviour.

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Section: Jhep08(2020)120supporting

confidence: 88%

Section: Introductionmentioning

confidence: 59%

Section: Jhep08(2020)120mentioning

confidence: 88%

Section: Jhep08(2020)120mentioning

confidence: 95%

See 2 more Smart Citations

Anomalous decay rate of quasinormal modes in Schwarzschild-dS and Schwarzschild-AdS black holes

Aragón

González

Papantonopoulos

et al. 2020

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…This inverted behavior appears when the mass of the scalar field exceeds a critical value, which corresponds to the value of the scalar field mass where the behavior of the decay rate of the QNMs is inverted and can be obtained from the condition I m(ω) = I m(ω) +1 in the eikonal limit, that is when → ∞. This anomalous decay rate for small mass scale of the scalar field was recently discussed in [67].…”

Section: (): V-volmentioning

confidence: 78%

Quasinormal modes and their anomalous behavior for black holes in f(R) gravity

et al. 2021

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We study the propagation of scalar fields in the background of an asymptotically de Sitter black hole solution in f(R) gravity. The aim of this work is to analyze in modified theories of gravity the existence of an anomalous decay rate of the quasinormal modes (QNMs) of a massive scalar field which was recently reported in Schwarzschild black hole backgrounds, in which the longest-lived modes are the ones with higher angular number, for a scalar field mass smaller than a critical value, while that beyond this value the behavior is inverted. We study the QNMs for various overtone numbers and they depend on a parameter $$\beta $$ β which appears in the metric and characterizes the f(R) gravity. For small $$\beta $$ β , i.e. small deviations from the Schwarzschild–dS black hole the anomalous behavior in the QNMs is present for the photon sphere modes, and the critical value of the mass of the scalar field depends on the parameter $$\beta $$ β while for large $$\beta $$ β , i.e. large deviations, the anomalous behavior and the critical mass does not appear. Also, the critical mass of the scalar field increases when the overtone number increases until the f(R) gravity parameter $$\beta $$ β approaches the near extremal limit at which the critical mass of the scalar field does not depend anymore on the overtone number. The imaginary part of the quasinormal frequencies is always negative leading to a stable propagation of the scalar fields in this background.

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Quasinormal modes for massive charged scalar fields in Reissner-Nordström dS black holes: anomalous decay rate

González

Papantonopoulos

Saavedra

et al. 2022

J. High Energ. Phys.

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The anomalous decay rate of the quasinormal modes occurs when the longest-lived modes are the ones with higher angular number. Such behaviour has been recently studied in different static spacetimes, for uncharged scalar and fermionic perturbations, being observed in both cases. In this work we consider the propagation of charged massive scalar fields in the background of Reissner-Nordström-de Sitter black holes and we mainly study the effect of the scalar field charge in the spectrum of quasinormal frequencies, as well as, its effect on the anomalous decay rate. Mainly, we show that the anomalous behaviour is present for massive charged scalar fields as well, and a critical value of scalar field mass exists, beyond which the behaviour is inverted. However, there is also a critical value of the parameter qQ of the charge of the scalar field and of the charge of the black hole, which increases when the cosmological constant increases, and beyond the critical value the anomalous behaviour of the decay rate could be avoided for the fundamental mode.

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Anomalous decay rate of quasinormal modes

Cited by 28 publications

References 50 publications

Anomalous decay rate of quasinormal modes in Schwarzschild-dS and Schwarzschild-AdS black holes

Anomalous decay rate of quasinormal modes in Schwarzschild-dS and Schwarzschild-AdS black holes

Quasinormal modes and their anomalous behavior for black holes in f(R) gravity

Quasinormal modes for massive charged scalar fields in Reissner-Nordström dS black holes: anomalous decay rate

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