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arXiv 1302.6545math.DG
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椭圆曲面上Chern-里奇流的坍缩

Collapsing of the Chern-Ricci flow on elliptic surfaces

Valentino Tosatti, Ben Weinkove, Xiaokui Yang

摘要:

研究亏格大于1的黎曼曲面上椭圆丛上的Chern-里奇流,它是Hermitian度量的发展方程,推广了Kahler-里奇流.我们表明,在任何Gauduchon度量开始,流崩溃的椭圆形纤维和度量收敛到回调的Kahler-Einstein度量从基地。我们的一些估计即使对于Kahler-里奇流也是新的。我们的结果的一个结果是,在Kodaira维1的每个极小非Kahler曲面上,Chern-里奇流在Gromov-Hausdorff意义下收敛到Riemann曲面上的轨道折叠Kahler-Einstein度量。

英文摘要:

We investigate the Chern-Ricci flow, an evolution equation of Hermitian metrics generalizing the Kahler-Ricci flow, on elliptic bundles over a Riemann surface of genus greater than one. We show that, starting at any Gauduchon metric, the flow collapses the elliptic fibers and the metrics converge to the pullback of a Kahler-Einstein metric from the base. Some of our estimates are new even for the Kahler-Ricci flow. A consequence of our result is that, on every minimal non-Kahler surface of Kodaira dimension one, the Chern-Ricci flow converges in the sense of Gromov-Hausdorff to an orbifold Kahler-Einstein metric on a Riemann surface.

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