AI 中文总结
研究克尔-纽曼时空中粒子衰变，通过理论分析与数值模拟发现粒子分裂时质量减少转化为动能，且随着电荷参数\(Q\)增加，母粒子与子粒子的比角动量、质量、比能量绝对值、相对洛伦兹因子及四速度呈现特定变化趋势，与克尔-德西特时空情况相反。
AI 中文摘要
本文研究了克尔-纽曼时空中粒子的衰变。理论分析和数值模拟表明，当粒子在克尔-纽曼时空中分裂时，其质量必然减少，且该质量亏损在质心系中转化为动能。将母粒子记为\(O\)，子粒子记为\(A\)和\(B\)。还发现随着电荷参数\(Q\)增加，母粒子\(O\)和子粒子\(B\)的比角动量变小，两个子粒子质量变大，其比能量绝对值变小，三个粒子间的相对洛伦兹因子变小，四速度也变小。这些趋势与克尔-德西特时空中增加宇宙学常数时相反。
英文摘要
In this paper, we study the decay of a particle in Kerr--Newman spacetime. Both theoretical analysis and numerical simulations show that when a particle splits in Kerr--Newman spacetime, its mass is inevitably reduced, and this mass deficit is transformed into kinetic energy in the center-of-mass frame. We denote the parent particle as $O$ and the daughter particles as $A$ and $B$. We also find that as the charge parameter $Q$ increases, the specific angular momenta of the parent particle $O$ and the daughter particle $B$ become smaller, the masses of the two daughter particles become larger, the absolute values of their specific energies become smaller, the relative Lorentz factors among the three particles become smaller, and their four-velocities also become smaller. These trends are opposite to those observed when increasing the cosmological constant in Kerr--de Sitter spacetime.
