可 Wick 旋转的度规是纯电的
数学物理
2017-03-20 v2 广义相对论与量子宇宙学
微分几何
math.MP
摘要
我们证明了任意维数和符号且允许标准 Wick 旋转至黎曼度规的度规,必然具有纯电的 Riemann 张量和 Weyl 张量。
引用
@article{arxiv.1504.01244,
title = {A Wick-rotatable metric is purely electric},
author = {Christer Helleland and Sigbjorn Hervik},
journal= {arXiv preprint arXiv:1504.01244},
year = {2017}
}
备注
9 pages, v2:changed and tighten proof. Slightly changed in order to be compatible with the definitions of Wick-rotations in arxiv:1703.04576 [math.DG]