Answers are grounded in this paper and cite their sources.
This paper discusses traversable wormholes that differ slightly but significantly from those of the Morris-Thorne type under the assumption of cylindrical symmetry. The throat is a piecewise smooth cylindrical surface resulting in a shape function that is not differentiable at some value. It is proposed that the regular derivative be replaced by a one-sided derivative at this value. The resulting wormhole geometry satisfies the weak energy condition.
No takes yet. Share an insight, caveat, or question.
Peter K. F. Kuhfittig (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: