Cylindrical wormholes with positive cosmological constant
Abstract
We construct cylindrical, traversable wormholes with finite radii by taking into account the cut-and-paste procedure for the case of cosmic string manifolds with a positive cosmological constant. Under reasonable assumptions about the equation of state of the matter located at the shell, we find that the wormhole throat undergoes a monotonous evolution provided it moves at a constant velocity. In order to explore the dynamical nonlinear behaviour of the wormhole throat, we consider that the matter at the shell is supported by anisotropic Chaplygin gas, anti-Chaplygin gas, or a mixed of Chaplygin and anti-Chaplygin gases implying that wormholes could suffer an accelerated expansion or contraction but the oscillatory behavior seems to be forbidden.
Keywords
Cite
@article{arxiv.1308.2651,
title = {Cylindrical wormholes with positive cosmological constant},
author = {Martín G. Richarte},
journal= {arXiv preprint arXiv:1308.2651},
year = {2013}
}
Comments
5 pages, no figures. Accepted for publication in PRD. (http://link.aps.org/doi/10.1103/PhysRevD.88.027507)