AI 中文总结
研究携带标量毛发的电和双荷黑洞时空中大质量测试粒子运动，确定其稳定与不稳定圆形轨道并讨论碰撞，发现标量毛发会改变轨道和碰撞情况，带电粒子碰撞可产生无限质心能量，其电荷值与视界标量场值有关。
AI 中文摘要
我们研究了携带标量毛发的电黑洞和双荷黑洞时空中大质量（不带电）测试粒子的运动。我们确定了稳定和不稳定的圆形轨道，并讨论了大质量测试粒子的碰撞。特别地，我们旨在展示与雷斯纳 - 诺德斯特龙（RN）时空相比，黑洞标量毛发的存在如何分别改变圆形轨道和粒子碰撞。我们发现，在存在标量毛发的情况下，最多可以存在四个圆形轨道（两个不稳定和两个稳定）以及\(L = 0\)的静态轨道。当至少有一个粒子带电时，粒子碰撞可以产生无限的质心能量，这与RN情况非常相似。然而，我们发现发生这种发散的电荷值取决于视界上标量场的值。
英文摘要
We study the motion of massive (un)charged test particles in space-times of electric and dyonic black holes which carry scalar hair. We determine the stable and unstable circular orbits and discuss the collision of massive test particles. In particular, we aim at demonstrating how the presence of the scalar hair of the black hole changes the circular orbits and particle collisions, respectively, as compared to the Reissner-Nordström (RN) space-time. We find that in the presence of scalar hair, up to four circular orbits (two unstable and two stable) as well as static orbits with $L=0$ can exist. Particle collisions can generate infinite center-of-mass energy when at least one of the particles is charged, very similar to the RN case. We find, however, that the value of the charge at which this divergence happens depends on the value of the scalar field on the horizon.
Comments23 pages
