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arXiv 1502.00304gr-qchep-thmath-phmath.DGmath.MP
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三维空间中的Goldberg-Sachs定理

A Goldberg-Sachs theorem in dimension three

Pawel Nurowski, Arman Taghavi-Chabert

摘要:

我们证明了Goldberg-Sachs定理在三维。更确切地说,给定一个满足拓扑质量引力方程的三维Lorentz流形,我们给出了无迹Ricci张量存在正交补可积且全测地的零线分布的充要条件.这包括,特别是,昆特时空是解决方案的拓扑质量重力方程。

英文摘要:

We prove a Goldberg-Sachs theorem in dimension three. To be precise, given a three-dimensional Lorentzian manifold satisfying the topological massive gravity equations, we provide necessary and sufficient conditions on the tracefree Ricci tensor for the existence of a null line distribution whose orthogonal complement is integrable and totally geodetic. This includes, in particular, Kundt spacetimes that are solutions of the topological massive gravity equations.

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