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arXiv 1609.09438math.DGmath-phmath.MP
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扭量空间的高维推广

Higher dimensional generalizations of twistor spaces

Hai Lin, Tao Zheng

摘要:

通过将扭量空间$\mathbb{P}^{1}$推广到更一般的复流形$Q$,我们构造了超复流形和超Kahler流形的扭量空间$M$.所得到的流形$X$是复的当且仅当$Q$允许一个全纯映射到$\mathbb{P}^1$。我们用这些流形做分支双覆盖。其中某些分支复盖可以产生非Kahler卡-丘流形。证明了这些流形$X$及其分支复盖都是非Kahler流形.在$Q$是平衡流形的情况下,所得到的流形$X$及其特殊的分支双覆盖具有平衡的Hermite度量.

英文摘要:

We construct a generalization of twistor spaces of hypercomplex manifolds and hyper-Kahler manifolds $M$, by generalizing the twistor $\mathbb{P}^{1}$ to a more general complex manifold $Q$. The resulting manifold $X$ is complex if and only if $Q$ admits a holomorphic map to $\mathbb{P}^1$. We make branched double covers of these manifolds. Some class of these branched double covers can give rise to non-Kahler Calabi-Yau manifolds. We show that these manifolds $X$ and their branched double covers are non-Kahler. In the cases that $Q$ is a balanced manifold, the resulting manifold $X$ and its special branched double cover have balanced Hermitian metrics.

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