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arXiv 2210.06558gr-qchep-th
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特殊各向异性标度时空中的Gauss-Bonnet黑洞

Gauss-Bonnet black holes in a special anisotropic scaling spacetime

S. Mahmoudi, Kh. Jafarzade, S. H. Hendi

摘要:

受Lifshitz引力理论的启发,我们提出了一个新的$(n+1)-$维数度量,其中时间和空间坐标各向异性地标度为$(t,r,θ_{i})\,\to (λ^{z}t,λ^{-1}r,λ^{x_i}\,θ_{i})$ .由于空间坐标的各向异性标度维数,这个时空不支持完整的薛定谔对称群。我们在上述几何的背景下寻找高斯-博内引力的解析解。我们表明,高斯-邦纳引力承认一个分析的解决方案,提供了适当的调整常数的理论。我们得到了一个与动力学指数$z$无关的精确真空解,它是伪双曲视界结构的黑洞解和伪球形边界的裸奇点.在一定条件下,我们还得到了Gauss-Bonnet引力的另一个精确解。在研究了这些解的几何性质之后,我们考虑了这些拓扑黑洞的热力学性质,并研究了每种几何结构下所得到的解的稳定性。

英文摘要:

Inspired by the Lifshitz gravity as a theory with anisotropic scaling behavior, we suggest a new $(n+1)-$dimensional metric in which the time and spatial coordinates scale anisotropically as $(t,r,θ_{i})\,\to (λ^{z}t,λ^{-1}r,λ^{x_i}\,θ_{i})$. Due to the anisotropic scaling dimension of the spatial coordinates, this spacetime does not support the full Schrödinger symmetry group. We look for the analytical solution of Gauss-Bonnet gravity in the context of the mentioned geometry. We show that Gauss-Bonnet gravity admits an analytical solution provided that the constants of the theory are properly adjusted. We obtain an exact vacuum solution, independent of the value of the dynamical exponent $z$, which is a black hole solution for the pseudo-hyperbolic horizon structure and a naked singularity for the pseudo-spherical boundary. We also obtain another exact solution of Gauss-Bonnet gravity under certain conditions. After investigating some geometrical properties of the obtained solutions, we consider the thermodynamic properties of these topological black holes and study the stability of the obtained solutions for each geometrical structure.

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