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arXiv 1006.5656quant-phmath-phmath.MPnlin.CD
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二维混沌台球边界节点域的迹公式

Trace formula for counting nodal domains on the boundaries of chaotic 2D billiards

Amit Aronovitch, Uzy Smilansky

摘要:

给定二维量子台球的狄利克雷本征函数,边界域计数是节点线与边界的交叉点的数量。我们研究由这些数字定义的整数序列,根据本征函数的能量排序。基于Berry随机波模型的一个变体,我们导出了边界域计数序列的半经典迹公式。该公式由一个Weyl光滑部分和一个依赖于经典周期轨道及其几何形状的振荡部分组成。这个跟踪公式的预测支持非洲台球计算的数值数据。

英文摘要:

Given a Dirichlet eigenfunction of a 2D quantum billiard, the boundary domain count is the number of intersections of the nodal lines with the boundary. We study the integer sequence defined by these numbers, sorted according to the energies of the eigenfunctions. Based on a variant of Berry's random wave model, we derive a semi-classical trace formula for the sequence of boundary domain counts. The formula consists of a Weyl-like smooth part, and an oscillating part which depends on classical periodic orbits and their geometry. The predictions of this trace formula are supported by numerical data computed for the Africa billiard.

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