标题： 由小额外维度支持的虫洞 显示英文标题

标题： Wormholes supported by small extra dimensions

摘要： 维持莫里斯-托恩虫洞开放需要违反零能量条件，这需要在喉部附近存在所谓的奇异物质。 许多研究人员认为奇异物质在经典广义相对论中是完全不物理的。 然而，已经表明，额外宏观维度的存在可以解决这个问题：喉部可以由普通物质构成，而额外维度则负责不可避免的能量违反。 本文的目的是证明额外维度可以是微观的，这一结果与弦理论一致。 显示英文摘要

摘要： Holding a Morris-Thorne wormhole open requires a violation of the null energy condition, calling for the need for so-called exotic matter near the throat. Many researchers consider exotic matter to be completely unphysical in classical general relativity. It has been shown, however, that the existence of an extra macroscopic dimension can resolve this issue: the throat could be lined with ordinary matter, while the extra dimension is then responsible for the unavoidable energy violation. The purpose of this paper is to show that the extra dimension can be microscopic, a result that is consistent with string theory.