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arXiv 2601.03751gr-qchep-th
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自旋粒子运动与雷斯纳-诺尔斯特罗姆时空中的混沌界

Motions of spinning particles and chaos bound in Reissner-Nordström spacetime

School of Science, Xihua University(西华大学理学院);College of Physics, Chengdu University of Technology(成都理工大学物理学院)

Chuang Yang, Deyou Chen, Yongtao Liu

AI总结:

研究自旋粒子在雷斯纳-诺尔斯特罗姆黑洞周围运动,探讨在自旋场中混沌界是否被违反,发现自旋 magnitude 超过阈值或自旋方向与角动量方向相反时,混沌界被违反。

摘要:

先前研究显示,混沌界在特定条件下可能在黑洞周围的标量场中被违反。本文探讨自旋粒子在雷斯纳-诺尔斯特罗姆黑洞周围运动,检查自旋场中混沌界是否被违反。对于中性粒子,当自旋 magnitude 超过特定阈值时,指数值超过表面引力,导致混沌界被违反。给定粒子总角动量固定时,当自旋方向与角动量方向反向时,指数值大于正向对齐时的值。对于带电粒子,考虑电磁力影响,发现对于相对较大的角动量,尽管电磁力不改变指数值随自旋和角动量变化的趋势,但仅修改其值,仍导致混沌界被违反。因此,在自旋场中观察到混沌界违反现象。

英文摘要:

Previous research showed that the chaos bound proposed in \cite{MSS} can be violated under specific conditions within the scalar fields surrounding black holes. In this paper, we explore motions of spinning particles orbiting a Reissner-Nordström black hole and examine whether this bound is violated in the spinor field of this black hole. For the neutral particle, when its spin magnitude surpasses a specific threshold, the value of the exponent exceeds the surface gravity, resulting in a violation of the bound. Given a fixed total angular momentum of the particle, when its spin direction is anti-aligned with the angular momentum direction, the exponent value is greater than that when the two directions are aligned. For the charged particle, taking into account the influence of the electromagnetic force, we find that for relatively large angular momenta, although the electromagnetic force does not change the trend of the exponent's variation with respect to spin and angular momentum, and only modifies its values, it still leads to the violation. Therefore, the chaos bound violations are observed in the spinor field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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