We investigate the turnaround radius of the Reissner–Nordström deSitter Spacetime and how the turnaround radius changes if a test particle carries charge. We also consider the Martínez–Troncoso–Zanelli (MTZ) solution of conformally coupled gravity and investigate how the turnaround radius changes for a scalar test charge. In both scalar and electric interaction cases we find that the Turnaround Radius depends on the particle’s energy.

中文翻译：

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赖斯纳-诺德斯特伦德西特时空中带电粒子的周转半径

我们研究了 Reissner-Nordström deSitter 时空的周转半径以及测试粒子携带电荷时周转半径如何变化。我们还考虑了共形耦合重力的 Martínez-Troncoso-Zanelli (MTZ) 解，并研究了标量测试装药的周转半径如何变化。在标量和电相互作用的情况下，我们发现周转半径取决于粒子的能量。