Causally pathological spacetimes are physically relevant
arXiv:gr-qc/0504013 · doi:10.1142/S0218271805007760
Abstract
We argue that in the context of string theory, the usual restriction to globally hyperbolic spacetimes should be considerably relaxed. We exhibit an example of a spacetime which only satisfies the causal condition, and so is arbitrarily close to admitting closed causal curves, but which has a well-behaved dual description, free of paradoxes.
Latex, 5 pages, 1 figure. Submitted for GRF essay competition