论文标题
极端Kerr白洞作为超高能量颗粒的来源
Extremal Kerr white holes as a source of ultra high energy particles
论文作者
论文摘要
我们考虑了一个过程，其中两个相同的大颗粒向内掉落，从无穷大的静止到极端的Kerr黑洞，在其附近事件地平线外面碰撞，并产生两个无质量的颗粒。如果其中一个粒子接受角动量的特定临界值，并且碰撞发生在任意接近事件范围的位置，则两个粒子之间的质量能量中心会发散。假设质量框架中心颗粒的各向同性发射我们表明，产生的无质量颗粒的保守能量与质量能量中心相当，概率略低于一半。该粒子进入与凯奇（Cauchy）地平线相吻合的黑洞事件地平线，向后转，并通过白洞事件地平线出现，进入Kerr Spacetime最大延伸的另一个渐近区域。由于在此过程中保留了保守的能量，因此当观察者到达无穷大时，它被视为具有发散能量的粒子。因此，极端白洞似乎是超高能量颗粒的来源。碰撞发生的类似过程略微发生在黑洞事件地平线内或在白洞事件地平线外部或内部也会产生高能量颗粒。
We consider a process where two identical massive particles fall inwards, starting from rest at infinity towards the extremal Kerr black hole, collide outside the event horizon in its vicinity and produce two massless particles. The center of mass energy of collision between the two particles diverges if one of the particle admits a specific critical value of the angular momentum and if the collision takes place at a location arbitrarily close to the event horizon. Assuming the isotropic emission of particles in the center of mass frame we show that one of the massless particles produced has divergent conserved energy comparable to the center of mass energy with probability slightly less than half. This particle enters the black hole event horizon which coincides with the Cauchy horizon, turns back, and emerges through the white hole event horizon into another asymptotic region in the maximal extension of Kerr spacetime. Since conserved energy is preserved in this process, it is perceived as a particle with divergent energy by the observer when it reaches infinity. Thus the extremal white hole appears to be a source of ultra high energy particles. Similar processes wherein collision takes place slightly inside the black hole event horizon or just outside or inside of white hole event horizon also produce high energy particles.
