期刊
GENERAL RELATIVITY AND GRAVITATION
卷 37, 期 12, 页码 2023-2038出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-005-0177-x
关键词
traversable wormholes; energy conditions; exotic matter; thin shell formalism
Firstly, we review the pointwise and averaged energy conditions, the quantum inequality and the notion of the volume integral quantifier, which provides a measure of the total amount of energy condition violating matter. Secondly, we present a specific metric of a spherically symmetric traversable wormhole in the presence of a generic cosmological constant, verifying that the null and the averaged null energy conditions are violated, as was to be expected. Thirdly, a pressureless dust shell is constructed around the interior wormhole spacetime by matching the latter geometry to a unique vacuum exterior solution. In order to further minimize the usage of exotic matter, we then find regions where the surface energy density is positive, thereby satisfying all of the energy conditions at the junction surface. An equation governing the behavior of the radial pressure across the junction surface is also deduced. Lastly, taking advantage of the construction, specific dimensions of the wormhole, namely, the throat radius and the junction interface radius, and estimates of the total traversal time and maximum velocity of an observer journeying through the wormhole, are also found by imposing the traversability conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据