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arXiv · 0911.0867

Conformally flat Lorentz manifolds and Fefferman Lorentz metrics

Yoshinobu Kamishima
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Abstract

We study conformal Fefferman-Lorentz manifolds introduced by Fefferman. To do so, we introduce Fefferman-Lorentz structure on (2n+2)-dimensional manifolds. By using causal conformal vector fields preserving that structure, we shall establish two theorems on compact Fefferman-Lorentz manifolds: One is the coincidence of vanishing curvature between Weyl conformal curvature tensor of Fefferman metrics on a Lorentz manifold $S^1\times N$ and Chern-Moser curvature tensor on a strictly pseudoconvex CR-manifold $N$. Another is the analogue of the conformal rigidity theorem of Obata and Lelong to the compact Fefferman-Lorentz manifolds admitting noncompact closed causal conformal Fefferman-Lorentz transformations.

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Yoshinobu Kamishima. 2009-11-04. Conformally flat Lorentz manifolds and Fefferman Lorentz metrics. https://arxiv.org/abs/0911.0867

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