论文标题
在两个耦合声腔中的多个避免交叉的声学类似物
Acoustic analog to multiple avoided-crossings in two coupled acoustic cavities
论文作者
论文摘要
具有闭合末端和隔离之间的圆柱管在两者中表现出声学模式，因此在某些频率下形成了一维腔。通过分区的部分传输会导致两个腔模式之间的相互作用，并在模式的频率之间避免了多个避免的交叉，该频率与分区位置的函数。这类似于具有两个多级和相互作用的子系统的量子系统，因此表现出多个避免的横梁。通过用部分传输和可移动的分区测量声音传输作为频率的函数来实现和研究这种声学模拟。实验结果与基于声波传输和不同界面的反射的简单模型之间获得了极好的一致性。
A cylindrical pipe with closed ends and with a partition in-between exhibits acoustic modes in the two, thus formed, one-dimensional cavities at certain frequencies. A partial transmission through the partition leads to interaction between the two cavities' modes and to multiple avoided crossings between modes' frequencies as a function of the partition position. This is analogous to a quantum system that has two multi-level and interacting sub-systems and thus exhibits multiple avoided crossings. Such an acoustic analog is realized and studied by measuring the sound transmission as a function of frequency through a pipe with a partially transmitting and movable partition. An excellent agreement is obtained between the experimental results and a simple model based on sound wave transmission and reflection at different interfaces.
