Abstract
We study the equilibrium orbit and violation of chaos bound of particle motion in the five-dimensional, charged, rotating Einstein-Maxwell-Chern-Simons black hole. Through numerical analysis, we find that the relative distance between the equilibrium orbit and the event horizon decreases with four independent parameters (particle's charge, black hole's charge and angular momentum parameters (a, b)) increase in specific regions, respectively. By adjusting the ratio of particle's charge to its angular momentum, we find that the equilibrium orbit can be close to the event horizon. We also find that the chaos bound of Einstein-Maxwell-Chern-Simons black holes can be greatly violated under certain parameter conditions. At the near horizon, the violation of chaos bound becomes more likely to occur.
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