标题： 考虑嵌入类一的 Morris-Thorne 虫洞中的奇异物质和极端径向张力 显示英文标题

标题： Accounting for exotic matter and the extreme radial tension in Morris-Thorne wormholes of embedding class one

摘要： 在广义相对论中，弯曲时空在高维平直时空中的嵌入一直是一个备受关注的话题，这由诱导物质理论所例证。 本文讨论的是嵌入类为一的时空，即可以嵌入五维平直时空的时空。 爱因斯坦的理论允许第五维为类空或类时。 通过假设后者，本文探讨了Morris-Thorne虫洞的两个基本问题，即奇异物质的起源以及喉部经常难以解释的巨大径向张力。 显示英文摘要

摘要： The embedding of a curved spacetime in a higher-dimensional flat spacetime has continued to be a topic of interest in the general theory of relativity, as exemplified by the induced-matter theory. This paper deals with spacetimes of embedding class one, i.e., spacetimes that can be embedded in a five-dimensional flat spacetime. Einstein's theory allows the fifth dimension to be either spacelike or timelike. By assuming the latter, this paper addresses two fundamental issues concerning Morris-Thorne wormholes, the origin of exotic matter and the frequently inexplicable enormous radial tension at the throat.