期刊
CLASSICAL AND QUANTUM GRAVITY
卷 23, 期 20, 页码 5811-5824出版社
IOP PUBLISHING LTD
DOI: 10.1088/0264-9381/23/20/004
关键词
-
In this work, we explore the possibility of evolving ( 2 + 1) and ( 3 + 1)dimensional wormhole spacetimes, conformally related to the respective static geometries, within the context of nonlinear electrodynamics. For the ( 3 + 1)dimensional spacetime, it is found that the Einstein field equation imposes a contracting wormhole solution and the obedience of the weak energy condition. Nevertheless, in the presence of an electric field, the latter presents a singularity at the throat; however, for a pure magnetic field the solution is regular. For the ( 2 + 1)- dimensional case, it is also found that the physical fields are singular at the throat. Thus, taking into account the principle of finiteness, which states that a satisfactory theory should avoid physical quantities becoming infinite, one may rule out evolving ( 3 + 1)- dimensional wormhole solutions, in the presence of an electric field, and the ( 2 + 1)- dimensional case coupled to nonlinear electrodynamics.
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