论文标题
在旋转颗粒的逃生概率方面重新访问碰撞的Penrose过程
Revisiting collisional Penrose processes in term of escape probabilities for spinning particles
论文作者
论文摘要
我们首先研究了从Kerr黑洞发出的旋转粒子的逃逸概率，发现逃逸概率随着极端Kerr黑洞的粒子的旋转而增加。相比之下，逃逸概率在地平线附近的位置下降，但随着粒子的旋转的增加，在远离地平线的位置增加。然后，我们探测逃逸概率与碰撞penrose过程的能量提取效率之间的关系，以不同自旋的粒子。对于极端的Kerr黑洞，效率随逃生概率而提高。对于非极端kerr黑洞，近马效率随逃生概率而降低，而效率可能随着梯形的逃逸概率而增加。在这种情况范围的限制中，我们还发现碰撞penrose过程中产生的旋转粒子的平均逃逸概率随Kerr黑洞的旋转参数而降低。
We first study the escape probability of the spinning particle emitted from the Kerr black hole and find that the escape probability increases with the spin of the particle around the extreme Kerr black hole; in contrast, the escape probability decreases at the position near the horizon but increases at the position far away from the horizon with the increasing spin of the particle. We then probe the relation between the escape probabilities and the energy extraction efficiencies of collisional Penrose processes for the particles with varying spin. For the extreme Kerr black hole, the efficiency increases with the escape probability; for the non-extreme Kerr black hole, the near-horizon-efficiency decreases with the escape probability whilst the efficiency may increase with the escape probability in the ergosphere. In the event horizon limit, we also find that the average escape probability of the spinning particle produced in the collisional Penrose process decreases with the rotation parameter of the Kerr black hole.
