On White Holes as Particle Accelerator

详细

We analyze scenarios of particle collisions in the metric of a nonextremal black hole that can potentially lead to an ultrahigh energy E_c.m. in their center-of-mass frame. Particle 1 comes from infinity to the black hole horizon while particle 2 emerges from a white hole region. It is shown that an unbounded E_c.m. requires that particle 2 pass close to the bifurcation point. An analogy with collisions inside the horizon is discussed.