自旋介导对洛伦兹违反黑洞时空混沌边界违反的调制
Spin-mediated modulation of chaos bound violation in Lorentz-violating black hole spacetimes
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中文总结 AI 辅助
研究洛伦兹违反黑洞时空中粒子自旋对混沌边界违反的调制，通过分析静态球对称（反）德西特黑洞中的自旋带电粒子，揭示自旋、洛伦兹违反参数和宇宙学常数的作用，表明它们共同改变轨道不稳定性与视界性质的关系。
中文摘要 AI 辅助
我们在大质量引力框架内研究了粒子自旋如何调制洛伦兹违反黑洞时空中的混沌边界违反情况。通过分析静态球对称（反）德西特黑洞中的自旋带电粒子，揭示了自旋 - 曲率耦合、洛伦兹对称性破缺和宇宙学常数在塑造混沌动力学中的作用。结果表明，自旋通过修改临界角动量阈值为混沌边界违反提供了微调机制，使更大自旋的粒子能在更低角动量下进入违反区域。洛伦兹违反参数通过缩小允许参数区域和降低临界电荷来抑制违反。同时，宇宙学常数表现出双重影响：更负的宇宙学常数减小违反参数区域，但增强了仍超出边界配置的违反幅度。这些发现表明自旋和洛伦兹对称性破缺效应共同改变了轨道不稳定性与视界性质之间的关系。
英文摘要
We investigate how the particle spin modulates chaos bound violations in Lorentz-violating black hole spacetimes within the framework of Bumblebee gravity. Using the Mathisson-Papapetrou-Dixon formalism, we analyze the effects of spin-curvature coupling, Lorentz symmetry breaking, and the cosmological constant on the orbital instability in static spherically symmetric (A)dS black holes. We find that the particle spin provides a tunable mechanism for the violations by lowering the critical angular momentum required to enter the violation regime. The Lorentz-violating parameter suppresses the violations by reducing the accessible parameter space and the critical charge. Meanwhile, a negative cosmological constant decreases the violation region but enhances the violation magnitude for allowed configurations. Our results demonstrate that the spin and Lorentz symmetry breaking jointly regulate the interplay between orbital instability and black hole horizon properties.
