Cosmological wormholes
General Relativity and Quantum Cosmology
2009-03-12 v3 Cosmology and Nongalactic Astrophysics
Abstract
Motivated by the cosmological wormhole solutions obtained from our recent numerical investigations, we provide a definition of a wormhole which applies to dynamical situations. Our numerical solutions do not have timelike trapping horizons but they are wormholes in the sense that they connect two or more asymptotic regions. Although the null energy condition must be violated for static wormholes, we find that it can still be satisfied in the dynamical context. Two analytic solutions for a cosmological wormhole connecting two Friedmann universes without trapping horizons are presented.
Keywords
Cite
@article{arxiv.0901.1153,
title = {Cosmological wormholes},
author = {Hideki Maeda and Tomohiro Harada and B. J. Carr},
journal= {arXiv preprint arXiv:0901.1153},
year = {2009}
}
Comments
10 pages, 3 figures, published version in Physical Review D