Type N Einstein space Time Machine spacetime

被引：14
作者：
Ahmed, Faizuddin [1 ]
机构：
[1] Hindustani Kendriya Vidyalaya, Dinesh Ojah Rd, Gauhati 781005, India
来源：
ANNALS OF PHYSICS | 2017年 / 382卷
关键词：
Vacuum spacetime; Closed timelike curves; Misner space; Cosmological constant; MOVING COSMIC STRINGS; CHRONOLOGY PROTECTION; CAUSALITY VIOLATION; NAKED SINGULARITIES; GRAVITATIONAL-FIELD; ASYMPTOTICALLY FLAT; QUANTIZED-FIELDS; WARP DRIVE; CURVES; VACUUM;
D O I：
10.1016/j.aop.2017.04.012
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an Einstein space axially symmetry spacetime admitting closed timelike curves (CTCs) which appear after a certain instant of time, i.e., a time machine spacetime. The spacetime is a four-dimensional generalization of flat Misner space in curved spacetime, free-from curvature divergences and belongs to type N in the Petrov classification. The spacetime admits a non-expanding, non-twisting, and shear-free null geodesic congruence. (C) 2017 Elsevier Inc. All rights reserved.
引用
收藏
页码：127 / 135
页数：9
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