Instability of Spacelike and Null Orbifold Singularities
High Energy Physics - Theory
2009-10-09 v2
Abstract
Time dependent orbifolds with spacelike or null singularities have recently been studied as simple models of cosmological singularities. We show that their apparent simplicity is an illusion: the introduction of a single particle causes the spacetime to collapse to a strong curvature singularity (a Big Crunch), even in regions arbitrarily far from the particle.
Cite
@article{arxiv.hep-th/0206228,
title = {Instability of Spacelike and Null Orbifold Singularities},
author = {Gary T. Horowitz and Joseph Polchinski},
journal= {arXiv preprint arXiv:hep-th/0206228},
year = {2009}
}
Comments
16 pages. References and comments added. Discussion of Milne with shift corrected