Research profile

Xi Sisi Shen

Works on analytic minimal model program, Kähler geometry and Ricci-flat & Calabi–Yau.

NP-RC-2284760000-0003-1056-0629

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2020

math.DGWider flowsv4arXiv:2011.09683

A Chern-Calabi flow on Hermitian manifolds

Xi Sisi Shen

We study an analogue of the Calabi flow in the non-Kähler setting for compact Hermitian manifolds with vanishing first Bott-Chern class. We prove a priori estimates for the evolving metric along the flow given a uniform bound on the Chern scalar curvature. If the Chern scalar curvature remains uniformly bounded for all time, we show that the flow converges smoothly to the unique Chern-Ricci-flat metric in the -class of the initial metric.

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math.DGarXiv:2004.00042

The Kähler-Ricci flow, holomorphic vector fields and Fano bundles

Xi Sisi Shen

We study the behavior of the Kähler-Ricci flow on compact manifolds developing finite-time singularities, in particular, when the flow contracts exceptional divisors or collapses the Fano fibers of a holomorphic fiber bundle. We present a technique using holomorphic vector fields to prove estimates related to the work of Song-Weinkove and Fu-Zhang.

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