Horizons in 2+1-dimensional collapse of particles
General Relativity and Quantum Cosmology
2009-11-13 v1
Abstract
A simple, geometrical construction is given for three-dimensional spacetimes with negative cosmological constant that contain two particles colliding head-on. Depending on parameters like particle masses and distance, the combined geometry will the that of a particle, or of a black hole. In the black hole case the horizon is calculated. It is found that that the horizon typically starts at a point and spreads into a closed curve with corners, which propagate along spacelike caustics and disappear as the horizon passes the particles.
Cite
@article{arxiv.0707.1877,
title = {Horizons in 2+1-dimensional collapse of particles},
author = {Dieter Brill and Puneet Khetarpal and Vijay Kaul},
journal= {arXiv preprint arXiv:0707.1877},
year = {2009}
}
Comments
10 pages, 5 figures