关于一种用于自由落体时间旅行的新型奇异时空的若干评注
广义相对论与量子宇宙学
2021-09-15 v1 高能物理 - 理论
摘要
本文本质上是对另一论文（Class. Quantum Grav. \textbf{35}(16) (2018), 165003）最近提出的一种具有闭合因果曲线的新时空模型的评述。该时空拓扑平凡、无曲率奇点，且甚至具有时间与空间可定向性。除总结此前关于因果测地线、潮汐加速度与能量条件违背的结果外，本文还考察了红移/蓝移效应以及应力-能量张量的 Hawking-Ellis 分类。
引用
@article{arxiv.1812.09021,
title = {Some remarks on a new exotic spacetime for time travel by free fall},
author = {Davide Fermi},
journal= {arXiv preprint arXiv:1812.09021},
year = {2021}
}
备注
17 pages, 9 figures. Submitted as a contribution to the proceedings of "DOMOSCHOOL - International Alpine School of Mathematics and Physics, Domodossola 2018". Possible text overlaps with my previous work arXiv:1803.08214, of which this is essentially a review. Additional results concerning redshift/blueshift effects and the classification of the stress-energy tensor are presented here