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arXiv 0909.2426math.DGmath.GT
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拟Fuchsian 3-流形与拟Fuchson Teichmüller空间

Quasi-Fuchsian 3-Manifolds and Metrics on Teichmüller Space

Ren Guo, Zheng Huang, Biao Wang

摘要:

几乎Fuchsian 3-流形是包含主曲率在$(-1,1)$范围内的不可压缩闭极小曲面的拟Fuchsian流形。这样的3-流形$M$允许一个平行面的叶状,其在Teichmüller空间中的轨迹表示为路径$γ$,我们证明了$γ$连接了$M$的共形边界的两个分量的共形结构.此外,我们还得到了$γ$上任意两点间Teichmüller距离的一个上界,特别是$M$的共形边界的两个分支间的Teichmüller距离,它是由$M$中极小曲面的主曲率表示的.我们还建立了Teichmüller空间上Weil-Petersson度量的一个新的势能。

英文摘要:

An almost Fuchsian 3-manifold is a quasi-Fuchsian manifold which contains an incompressible closed minimal surface with principal curvatures in the range of $(-1,1)$. Such a 3-manifold $M$ admits a foliation of parallel surfaces, whose locus in Teichmüller space is represented as a path $γ$, we show that $γ$ joins the conformal structures of the two components of the conformal boundary of $M$. Moreover, we obtain an upper bound for the Teichmüller distance between any two points on $γ$, in particular, the Teichmüller distance between the two components of the conformal boundary of $M$, in terms of the principal curvatures of the minimal surface in $M$. We also establish a new potential for the Weil-Petersson metric on Teichmüller space.

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