Wormholes Threaded by Chiral Fields
General Relativity and Quantum Cosmology
2013-05-08 v1 High Energy Physics - Theory
Abstract
We consider Lorentzian wormholes with a phantom field and chiral matter fields. The chiral fields are described by the non-linear sigma model with or without a Skyrme term. When the gravitational coupling of the chiral fields is increased, the wormhole geometry changes. The single throat is replaced by a double throat with a belly inbetween. For a maximal value of the coupling, the radii of both throats reach zero. Then the interior part pinches off, leaving a closed universe and two (asymptotically) flat spaces. A stability analysis shows that all wormholes threaded by chiral fields inherit the instability of the Ellis wormhole.
Keywords
Cite
@article{arxiv.1302.5560,
title = {Wormholes Threaded by Chiral Fields},
author = {Efstathios Charalampidis and Theodora Ioannidou and Burkhard Kleihaus and Jutta Kunz},
journal= {arXiv preprint arXiv:1302.5560},
year = {2013}
}
Comments
14 pages, 9 figures