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arXiv 2505.03499math.DG
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Ricci收缩孤立子中自收缩子的特征值估计

An eigenvalue estimate for self-shrinkers in a Ricci shirinker

Franciele Conrado, Detang Zhou

AI总结:

本文研究Ricci收缩孤立子中超曲面上漂移拉普拉斯算子的谱性质,证明了有界加权平均曲率浸入超曲面的谱离散性,并给出嵌入f-极小超曲面第一非零特征值的下界,推广了Choi-Wang等经典估计。

摘要:

本文研究Ricci收缩孤立子$(\overline{M},g,f)$中超曲面$M$上的漂移拉普拉斯算子$Δ_f$。我们证明,在势函数满足温和条件的Ricci收缩孤立子中,对于具有有界加权平均曲率的浸入超曲面,$Δ_f$的谱是离散的。其次,当超曲面是嵌入的$f$-极小超曲面时,我们给出$Δ_f$的第一个非零特征值的下界。该估计包含正爱因斯坦流形中紧致极小超曲面的情形,特别是Choi和Wang关于圆球中极小超曲面的估计。该估计还重新得到了Ding-Xin和Brendle-Tsiamis关于自收缩子的估计。

英文摘要:

In this paper, we study the drifted Laplacian $Δ_f$ on a hypersurface $M$ in a Ricci shrinker $(\overline{M},g,f)$. We prove that the spectrum of $Δ_f$ is discrete for immersed hypersurfaces with bounded weighted mean curvature in a Ricci shrinker with a mild condition on the potential function. Next, we give a lower bound for the first nonzero eigenvalue of $Δ_f$ when the hypersurface is an embedded $f$-minimal one. This estimate contains the case of compact minimal hypersurfaces in a positive Einstein manifold, in particular Choi and Wang's estimate for minimal hypersurfaces in a round sphere. The estimate also recovers the ones of Ding-Xin and Brendle-Tsiamis on self-shrinkers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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