Perturbative and nonperturbative quasinormal modes of 4D Einstein-Gauss-Bonnet black holes

Aragón, Almendra; Bécar, Ramón; González, P. A.; Vásquez, Yerko

doi:10.48550/arxiv.2004.05632

Cited by 24 publications

(28 citation statements)

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“…which is much much less than 7/3 after combining the result (63). This provides another evidence, in addition to the one given in ( 54) and ( 56), for the inconsistency of the model with vanishing bare cosmological constant.…”

Section: The Effect Of the Speed Of Gravitational Waves In The Gauss-...supporting

confidence: 74%

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Theoretical and observational constraints on regularized 4$D$ Einstein-Gauss-Bonnet gravity

Feng,

Gu,

Shu

2020

Preprint

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Regularized Einstein-Gauss-Bonnet (EGB) theory of gravity in four dimensions is a new attempt to include nontrivial contributions of Gauss-Bonnet term. In this paper, we make a detailed analysis on possible constraints of the model parameters of the theory from recent cosmological observations, and some theoretical constraints as well. Our results show that the theory with vanishing bare cosmological constant, Λ0, is ruled out by the current observational value of w de , and the observations of GW170817 and GRB 170817A as well. For nonvanishing bare cosmological constant, instead, our results show that the current observation of the speed of GWs measured by GW170817 and GRB 170817A would place a constraints on α, a dimensionless parameter of the theory, as −7.78 × 10 −16 ≤ α ≤ 3.33 × 10 −15 .

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Section: The Effect Of the Speed Of Gravitational Waves In The Gauss-...supporting

confidence: 74%

“…In summary, if we put the inconsistency obtained from the constraint of w de aside, we naively have a stringent bound (63). However, we should be very careful here.…”

Section: The Effect Of the Speed Of Gravitational Waves In The Gauss-...mentioning

confidence: 99%

Theoretical and observational constraints on regularized 4$D$ Einstein-Gauss-Bonnet gravity

Feng,

Gu,

Shu

2020

Preprint

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“…For these reasons, the investigation of the properties of such solutions has value regardless of the validity of the theory and has attracted great interest [see, e.g. 11,12,13,14,15,16,17,18,19,20,21,22]. At the same time, validity of the 4D EGB theory possibly with some modifications has been advocated in new theoretical frameworks that may help to overcome the above mentioned shortcomings (see for example [23,24,25,26]).…”

Section: Introductionmentioning

confidence: 99%

Charged particle and epicyclic motions around $4D$ Einstein-Gauss-Bonnet black hole immersed in an external magnetic field

Shaymatov,

Vrba,

Malafarina

et al. 2020

Preprint

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We investigate particle motion in the vicinity of a 4D Einstein-Gauss-Bonnet (EGB) black hole immersed in external asymptotically uniform magnetic field.It is well known that magnetic fields can strongly affect charged particle motion in the black hole vicinity due to the Lorenz force. We find that the presence of the Gauss-Bonnet (GB) coupling gives rise to a similar effect, reducing the radius of the innermost stable circular orbit (ISCO) with respect to the purely relativistic Schwarzschild black hole. Further, we consider particle collisions in the black hole vicinity to determine the center of mass energy and show that this energy increases with respect to the Schwarzschild case due to the effect of the GB term. Finally, we consider epicyclic motion and its frequencies and resonance as a mean to test the predictions of the model against astrophysical observations. In particular we test which values of the parameters of the theory best fit the 3:2 resonance of high-frequency quasi-periodic oscillations in three

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“…Interestingly, the solution of the same form has been presented in the conformal anomaly inspired gravity [39]. Along this line, the Einstein-Gauss-Bonnet gravity in the 4D spacetime has been explored extensively on various aspects, including the exact solutions [40][41][42][43][44][45][46][47][48], the quasinormal modes and stability [49][50][51][52][53][54][55][56][57][58], the observable shadows [59][60][61][62][63][64], the geodesics and gravitational lensing [65][66][67][68][69], the thermodynamics and cosmic censorship conjecture [70][71][72][73][74][75][76][77][78],…”

Section: Introductionmentioning

confidence: 90%

Holographic superconductors in 4D Einstein-Gauss-Bonnet gravity

Qiao,

OuYang,

Wang

et al. 2020

Preprint

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We investigate the neutral AdS black-hole solution in the novel four-dimensional Einstein-Gauss-Bonnet gravity proposed in [D. Glavan and C.S. Lin, Phys. Rev. Lett. 124, 081301 (2020)] and construct the gravity duals of (2 + 1)-dimensional superconductors with Gauss-Bonnet corrections in the probe limit. We find that the curvature correction has a more subtle effect on the scalar condensates in the s-wave superconductor in (2 + 1)-dimensions, which is different from the finding in the higher-dimensional superconductors that the higher curvature correction makes the scalar hair more difficult to be developed in the full parameter space. However, in the p-wave case, we observe that the higher curvature correction always makes it harder for the vector condensates to form in various dimensions. Moreover, we note that the higher curvature correction results in the larger deviation from the expected relation in the gap frequency ωg/Tc ≈ 8 in both (2 + 1)-dimensional s-wave and p-wave models.

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Perturbative and nonperturbative quasinormal modes of 4D Einstein-Gauss-Bonnet black holes

Cited by 24 publications

References 0 publications

Theoretical and observational constraints on regularized 4$D$ Einstein-Gauss-Bonnet gravity

Theoretical and observational constraints on regularized 4$D$ Einstein-Gauss-Bonnet gravity

Charged particle and epicyclic motions around $4D$ Einstein-Gauss-Bonnet black hole immersed in an external magnetic field

Holographic superconductors in 4D Einstein-Gauss-Bonnet gravity

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