Stable bound orbits around static Einstein-Gauss-Bonnet black holes
Stable bound orbits around static Einstein-Gauss-Bonnet black holes
复制标题
静态爱因斯坦-高斯-博内特黑洞周围的稳定束缚轨道
DOI：
10.1103/physrevd.105.124033
复制
发表时间：
2022
影响因子：
5
通讯作者：
Tomizawa Shinya
中科院分区：
文献类型：
--
作者：
Suzuki Ryotaku;Tomizawa Shinya
众所周知，在高维爱因斯坦引力中，渐近平坦、静态和球对称的黑洞不允许视界外有质量或无质量粒子的稳定束缚轨道。然而，对于大质量粒子，这在更高曲率的理论中发生了巨大的变化。我们阐明了在一维Einstein-Gauss-Bonnet理论中存在稳定束缚轨道的参数范围。特别是，我们证明了存在的高斯-邦纳耦合常数的下限，低于稳定的约束轨道不再存在。此外，我们还发现，对于理论中的AdS黑洞，视界外可能存在两个稳定的圆轨道。
As is well known, asymptotically flat, static, and spherically symmetric black holes do not admit stable bound orbits of massive or massless particles outside the horizon in higher-dimensional Einstein gravity. However, for massive particles, this dramatically changes in higher curvature theories. We clarify the parameter range such that there exist stable bound orbits in-dimensional Einstein-Gauss-Bonnet theories for. In particular, we show the existence of the lower bound of the Gauss-Bonnet coupling constant below which stable bound orbits cease to exist. Moreover, we also find that for AdS black holes in the theories, there can exist two stable circular orbits outside the horizon.