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pro vyhledávání: '"Wu, Liang-Bi"'
The spectrum and dynamical instability, as well as the transient effect of the tensor perturbation for the so-called Maeda-Dadhich black hole, a type of Kaluza-Klein black hole, in Einstein-Gauss-Bonnet gravity have been investigated in framework of
Externí odkaz:
http://arxiv.org/abs/2407.03907
In this study, we investigate the pseudospectrum and spectrum (in)stability of quantum corrected Schwarzschild black hole. Methodologically, we use the hyperboloidal framework to cast the quasinormal mode (QNM) problem into an eigenvalue problem asso
Externí odkaz:
http://arxiv.org/abs/2401.09907
Publikováno v:
Eur. Phys. J. C 84, 507 (2024)
We analyse the stability of the inner horizon of the quantum-corrected black hole which is proposed in loop quantum gravity as the exterior of the quantum Oppenheimer-Snyder and Swiss Cheese models. It is shown that the flux and energy density of a t
Externí odkaz:
http://arxiv.org/abs/2308.10746
In Einstein-Gauss-Bonnet gravity, we study the quasi-normal modes (QNMs) of the tensor perturbation for the so-called Maeda-Dadhich black hole which locally has a topology $\mathcal{M}^n \simeq M^4 \times \mathcal{K}^{n-4}$. Our discussion is based o
Externí odkaz:
http://arxiv.org/abs/2307.06801
In the Bondi-Sachs gauge, the Einstein equations with a cosmological constant coupled to a scalar field in spherical symmetry are cast into a first order strongly hyperbolic formulation in which the lapse and shift are the fundamental variables. For
Externí odkaz:
http://arxiv.org/abs/2301.05413
Autor:
Cao, Li-Ming, Wu, Liang-Bi
The well-posedness of the gravitational equations of $f(R)$ gravity are studied in this paper. Three formulations of the $f(R)$ gravity with dynamical shifts (which are all based on the Arnowitt-Deser-Misner (ADM) formalism of the equations) are inve
Externí odkaz:
http://arxiv.org/abs/2112.07336
To ensure the light (emitted far away from the source of gravity) can arrive at the null infinity of an asymptotically flat spacetime, it is shown that the rate of Bondi mass aspect has to satisfy some conditions. In Einstein gravity theory, we find
Externí odkaz:
http://arxiv.org/abs/2109.05973
Autor:
Cao, Li-Ming, Wu, Liang-Bi
To ensure the existence of a well defined linearized gravitational wave equation, we show that the spacetimes in the so-called "Einstein-Gauss-Bonnet gravity in four dimension" have to be locally conformally flat.
Comment: revtex, 5 pages, no fi
Comment: revtex, 5 pages, no fi
Externí odkaz:
http://arxiv.org/abs/2103.09612
Autor:
Cao, Li-Ming, Wu, Liang-Bi
Publikováno v:
Phys. Rev. D 103, 064054 (2021)
In Einstein-Gauss-Bonnet gravity, for a group of warped product spacetimes, we get a generalized master equation for the perturbation of tensor type. We show that the "effective metric" or "acoustic metric" for the tensor perturbation equation can be
Externí odkaz:
http://arxiv.org/abs/2101.02461
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