随机长度度量图上积分态密度的连续性
Continuity of the integrated density of states on random length metric graphs
摘要:
我们建立了随机量子图的积分态密度的几个性质:在适当的遍历性和顺从性假设下,积分态密度可以通过紧子图使用穷举过程来定义。单位体积的迹线公式成立,类似于欧几里德的情况。我们的设置包括周期图。对于边长是随机的且以光滑的方式独立变化的模型,我们证明了积分态密度的Wegner估计和相关的正则性结果。这些结果示出了一个例子的基础上Kagome格。在周期情况下,我们求出了所有紧支本征函数,并计算了积分态密度不连续的位置和大小。
英文摘要:
We establish several properties of the integrated density of states for random quantum graphs: Under appropriate ergodicity and amenability assumptions, the integrated density of states can be defined using an exhaustion procedure by compact subgraphs. A trace per unit volume formula holds, similarly as in the Euclidean case. Our setting includes periodic graphs. For a model where the edge length are random and vary independently in a smooth way we prove a Wegner estimate and related regularity results for the integrated density of states. These results are illustrated for an example based on the Kagome lattice. In the periodic case we characterise all compactly supported eigenfunctions and calculate the position and size of discontinuities of the integrated density of states.
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