arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1603.09646math.NT
收藏

二维环面上随机本征函数与线段的交点

Nodal intersections of random eigenfunctions against a segment on the 2-dimensional torus

Riccardo Walter Maffucci

摘要:

我们考虑标准环面上拉普拉斯算子的随机高斯本征函数,并研究与线段交点的数目。相对于任何平滑曲线,期望的相交数普遍与参考曲线的长度乘以波数成比例,与几何无关。我们发现了一个上界的节点交叉方差,这取决于是否直线的斜率是合理的或不合理的。我们的研究结果表明,这个问题和圆上的格点理论之间的密切关系。

英文摘要:

We consider random Gaussian eigenfunctions of the Laplacian on the standard torus, and investigate the number of nodal intersections against a line segment. The expected intersection number, against any smooth curve, is universally proportional to the length of the reference curve, times the wavenumber, independent of the geometry. We found an upper bound for the nodal intersections variance, depending on whether the slope of the straight line is rational or irrational. Our findings exhibit a close relation between this problem and the theory of lattice points on circles.

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。

↑