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arXiv math-ph/0301035math-phmath.MP
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量子唯一遍历性

Quantum unique ergodicity

Steve Zelditch

摘要:

这个简短的说明证明了一个拉普拉斯算子不能是量子唯一遍历的,如果它拥有一个零阶准模,它(i)有一个奇异极限,(ii)是一个线性组合的一致有界数目的本征函数(模一个o(1)错误)。体育场的弹跳球准模被认为具有这种性质(E.J.Heller等人),H.唐纳利在某些非正曲面上。主要成分是证明所有序列的非对角矩阵元素的QUE系统与消失的频谱间隙趋于零。

英文摘要:

This short note proves that a Laplacian cannot be quantum uniquely ergodic if it possesses a quasimode of order zero which (i) has a singular limit, and (ii) is a linear combination of a uniformly bounded number of eigenfunctions (modulo an o(1) error). Bouncing ball quasimodes of the stadium are believed to have this property (E.J. Heller et al) and so are analogous quasimodes recently constructed by H. Donnelly on certain non-positively curved surfaces. The main ingredient is the proof that all sequences of off-diagonal matrix elements of QUE systems with vanishing spectral gaps tend to zero.

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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