arXiv:0705.0408 [hep-th]
How Black Holes Form in High Energy Collisions
Authors: Nemanja Kaloper, John Terning
We elucidate how black holes form in trans-Planckian collisions. In the
rest frame of one of the incident particles, the gravitational field of
the other, which is rapidly moving, looks like a gravitational shock
wave. The shock wave focuses the target particle down to a much smaller
impact parameter. In turn, the gravitational field of the target
particle captures the projectile when the resultant impact parameter is
smaller than its own Schwarzschild radius, forming a black hole. One can
deduce this by referring to the original argument of escape velocities
exceeding the speed of light, which Michell and Laplace used to discover
the existence of black holes.We elucidate how black holes form in
trans-Planckian collisions. In the rest frame of one of the incident
particles, the gravitational field of the other, which is rapidly
moving, looks like a gravitational shock wave. The shock wave focuses
the target particle down to a much smaller impact parameter. In turn,
the gravitational field of the target particle captures the projectile
when the resultant impact parameter is smaller than its own
Schwarzschild radius, forming a black hole. One can deduce this by
referring to the original argument of escape velocities exceeding the
speed of light, which Michell and Laplace used to discover the existence
of black holes.