Topological censorship and chronology protection
General Relativity and Quantum Cosmology
2008-11-26 v2
Abstract
Over the past two decades, substantial efforts have been made to understand the way in which physics enforces the ordinary topology and causal structure that we observe, from subnuclear to cosmological scales. We review the status of topological censorship and the topology of event horizons; chronology protection in classical and semiclassical gravity; and related progress in establishing quantum energy inequalities.
Keywords
Cite
@article{arxiv.0801.0735,
title = {Topological censorship and chronology protection},
author = {John L. Friedman and Atsushi Higuchi},
journal= {arXiv preprint arXiv:0801.0735},
year = {2008}
}
Comments
Dedicated to Rafael Sorkin, whose tutoring and friendship from third grade on is responsible for one of us (JF) having spent his adult life in physics and whose work has inspired both of us. In v.2, some references are updated, and references are added to early work on 2+1 spacetimes and to work on event-horizon topology