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arXiv 2005.14267math.NT
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Hilbert模形式的谱晕

Spectral halo for Hilbert modular forms

Rufei Ren, Bin Zhao

摘要:

设$F$是一个全实数域,$p$是一个在$F$中完全分裂的奇素数.证明了$F$上的定四元数代数的本征簇满足以下性质:在权空间的边界环上,本征簇是权空间上有限的可数无穷个连通分支的不交并;在每个固定连接的组件上,对于$p$上的$F$的所有素数$\mathfrak{p}$,点的$U_\mathfrak{p}$ -斜率与$\mathfrak{p}$ -参数的$p$ -adic赋值之间的比率由显式数字限定。应用Hansen的$p$ -adic内插定理,我们能够将我们的结果转移到Hilbert模特征簇上.特别地,我们证明了在Hilbert模特征簇的每一个不可约分量上,当一个点向边界移动时,它的$U_p$斜率趋于零。在本征曲线的情况下,这完成了科尔曼-马祖尔'晕'猜想的证明。

英文摘要:

Let $F$ be a totally real field and $p$ be an odd prime which splits completely in $F$. We prove that the eigenvariety associated to a definite quaternion algebra over $F$ satisfies the following property: over a boundary annulus of the weight space, the eigenvariety is a disjoint union of countably infinitely many connected components which are finite over the weight space; on each fixed connected component, the ratios between the $U_\mathfrak{p}$-slopes of points and the $p$-adic valuations of the $\mathfrak{p}$-parameters are bounded by explicit numbers, for all primes $\mathfrak{p}$ of $F$ over $p$. Applying Hansen's $p$-adic interpolation theorem, we are able to transfer our results to Hilbert modular eigenvarieties. In particular, we prove that on every irreducible component of Hilbert modular eigenvarieties, as a point moves towards the boundary, its $U_p$ slope goes to zero. In the case of eigencurves, this completes the proof of Coleman-Mazur's `halo' conjecture.

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