arXiv math/04072312004-07math.AGmath.CVmath.DG

Locally conformally Kaehler manifolds with potential

Liviu Ornea, Misha Verbitsky

备注：: 14 pages, v. 5: section about the embedding of Sasakian manifolds eliminated due to an error
发表信息：: Mathematische Annalen, Vol. 248 (1), 2010, pp. 25-33

英文摘要：

A locally conformally Kähler (LCK) manifold $M$ is one which is covered by a Kähler manifold $\tilde M$ with the deck transform group acting conformally on $\tilde M$. If $M$ admits a holomorphic flow, acting on $\tilde M$ conformally, it is called a Vaisman manifold. Neither the class of LCK manifolds nor that of Vaisman manifolds is stable under small deformations. We define a new class of LCK-manifolds, called LCK manifolds with potential, which is closed under small deformations. All Vaisman manifolds are LCK with potential. We show that an LCK-manifold with potential admits a covering which can be compactified to a Stein variety by adding one point. This is used to show that any LCK manifold M with potential, $\dim M > 2$, can be embedded to a Hopf manifold, thus improving on similar results for Vaisman. manifolds.

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