We report unexpected classical and quantum dynamics of a wave propagating in a periodic potential in high Brillouin zones. Branched flow appears at wavelengths shorter than the typical length scale of the ordered periodic structure and for energies above the potential barrier. The strongest branches remain stable indefinitely and may create linear dynamical channels, wherein waves are not confined directly by potential walls as electrons in ordinary wires but rather, indirectly and more subtly by dynamical stability. We term these superwires since they are associated with a superlattice.

中文翻译：

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高布里渊区波的传播：混沌分支流和稳定的超线[工程]

我们报告了波在高布里渊区周期性势能中传播的出人意料的经典和量子动力学。分支流出现在比有序周期性结构的典型长度尺度短的波长和高于势垒的能量处。最强的分支无限期地保持稳定，并可能产生线性动态通道，其中波不像普通电线中的电子那样直接受到势墙的限制，而是间接地和更微妙地受到动态稳定性的限制。我们称这些超线是因为它们与超晶格相关联。