论文标题
在爱因斯坦 - 马克斯韦尔 - 迪拉顿轴黑洞中绑定在莱普诺夫指数上
Bound on Lyapunov exponent in Einstein-Maxwell-Dilaton-Axion black holes
论文作者
论文摘要
在本文中，我们研究了带电粒子围绕非超级和极端爱因斯坦 - 麦克斯韦 - 二元 - 轴黑孔黑洞的角度动量的影响。对于旋转参数的某些值和黑洞的延伸常数，发现了违反指数的角度的角动量的范围和空间区域。当旋转参数足够大，并且粒子的旋转方向与黑洞的旋转方向相反时，这种违规总是存在。外部黑洞以外的空间区域相对较大。在极端黑孔的近磨牙区域中，违规取决于黑洞和粒子的旋转方向，不取决于角动量的值。
In this paper, we investigate the influence of the angular momentum of a charged particle around non-extremal and extremal Einstein-Maxwell-Dilaton-Axion black holes on the Lyapunov exponent. The angular momentum's ranges and spatial regions where the bound of the exponent is violated are found for certain values of the rotation parameter and dilatonic constant of the black holes. This violation always exists when the rotation parameter is large enough and the rotation directions of the particle is opposite to those of the black holes. The spatial regions outside the extermal black hole for the violation is relatively large. In the near-horizon regions of the extremal black holes, the violation depends on the rotation directions of the black holes and particle, and does not depend on the value of the angular momentum.
