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arXiv 1206.4010math.DGmath.AP
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Riemann模空间上Weil-Petersson Laplacian的Spectral theory

Spectral theory for the Weil-Petersson Laplacian on the Riemann moduli space

Lizhen Ji, Rafe Mazzeo, Werner Müller, Andras Vasy

摘要:

研究了亏格为$γ> 1$的曲面的黎曼模空间$\mathcal M_γ$上与Weil-Petersson度量$g_{\mathrm{WP}}$相关的标量Laplace-Beltrami算子的谱几何性质.这个空间具有关于$g_{\mathrm{WP}}$的奇异紧化,并且这个度量具有沿着简单正规交叉因子的有限集合的交叉尖边奇异性。我们首先证明了标量拉普拉斯算子本质上是自伴的,这意味着它的谱是离散的。第二个定理是这个谱的计数函数的外尔渐近公式。

英文摘要:

We study the spectral geometric properties of the scalar Laplace-Beltrami operator associated to the Weil-Petersson metric $g_{\mathrm{WP}}$ on $\mathcal M_γ$, the Riemann moduli space of surfaces of genus $γ> 1$. This space has a singular compactification with respect to $g_{\mathrm{WP}}$, and this metric has crossing cusp-edge singularities along a finite collection of simple normal crossing divisors. We prove first that the scalar Laplacian is essentially self-adjoint, which then implies that its spectrum is discrete. The second theorem is a Weyl asymptotic formula for the counting function for this spectrum.

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