标题： 施瓦西背景下运动审查与高能粒子碰撞 显示英文标题

标题： Kinematic censorship and high energy particle collisions in the Schwarzschild background

摘要： 我们研究了在史瓦西度规的视界外部区域中自由运动的两个粒子之间的近视界碰撞。其中一个粒子从白洞中逸出。我们仔细分析了在这种过程中，碰撞点处质心系中的能量可能以何种方式出现无限大的增长。同时，我们也追踪了碰撞动力学如何在遵守运动学审查原则时表现出来，根据这一原则，任何碰撞事件释放的能量不能真正达到无穷大。按照这一原则，任何碰撞事件释放的能量必须保持有限，尽管它可以被人为地增大到任意值。此外，我们还发现，粒子在奇点附近的衰变会导致能量无界释放，且与初始值无关。 显示英文摘要

摘要： We consider near-horizon collisions between two particles moving freely in the Schwarzschild metric in the region outside the horizon. One of them emerges from a white hole. We scrutiny when such a process can lead to the indefinitely large growth of the energy in the center of mass frame in the point of collision. We also trace how the kinematics of collision manifests itself in preserving the principle of kinematic censorship according to which the energy released in any event of collision cannot be literally infinite. According to this principle, the energy released in any event of collision, must remain finite although it can be made as large as one likes. Also, we find that particle decay near the singularity leads to unbounded release of energy independently of its initial value.