论文标题
四维爱因斯坦 - 加斯 - 鲍尼特黑洞中的旋转测试粒子
Spinning test particle in four-dimensional Einstein-Gauss-Bonnet Black Hole
论文作者
论文摘要
在本文中，我们研究了新型的四维爱因斯坦 - 高斯 - 鲍尼特重力的经典旋转试验粒子在静态球形对称黑洞周围绕的运动的运动[D. Glavan和C. Lin，物理。莱特牧师。 124，081301（2020）]。我们发现，当高斯 - 邦网耦合参数$α$几乎在特殊范围内$ -6.1 <α/m^2 <-2 $（$ m $是黑洞的质量）时，旋转测试粒子在黑洞背景中具有两个最小值的有效潜力具有两个最小值，这意味着这种粒子可以在两个单独的范围内与同一旋转旋转的旋转敏感型和或或或或或或或或或或或或或或或或或或或为所致所致而言。我们还研究了旋转测试粒子的最内向的稳定圆形轨道，发现粒子旋转对最内向的稳定圆形的影响与一般相对性中的四维黑洞的情况相似。
In this paper, we investigate the motion of a classical spinning test particle orbiting around a static spherically symmetric black hole in a novel four-dimensional Einstein-Gauss-Bonnet gravity [D. Glavan and C. Lin, Phys. Rev. Lett. 124, 081301 (2020)]. We find that the effective potential of a spinning test particle in the background of the black hole has two minima when the Gauss-Bonnet coupling parameter $α$ is nearly in a special range $-6.1<α/M^2<-2$ ($M$ is the mass of the black hole), which means such particle can be in two separate orbits with the same spin angular momentum and orbital angular momentum. We also investigate the innermost stable circular orbits of the spinning test particle and find that the effect of the particle spin on the the innermost stable circular is similar to the case of the four-dimensional black hole in general relativity.
