Random Media and Anderson Localization

波的传播和流体的流动 随机介质是重要的研究领域，不仅因为 它们涉及许多实际应用，但也 因为它们展现了目前在强烈的 凝聚态物理学的研究。 实际 应用包括声学地球物理勘测、医疗 新型复合材料和多孔材料的成像、测试、太阳能 收集器设计等现代物理现象， 包括渗流，分数维结构， 和安德森局部化。 波背后的基本物理学 随机介质中的传播和流动将实验 研究使用理想液体，超流氦，渗透 随机系统 特别地，第四声音传播在 各种随机多孔介质与超流膜中的第三声 在随机衬底上将被研究。

The propagation of waves and the flow of fluids through random media are important areas of research not only because they are involved in many practical applications, but also because they exhibit novel phenomena currently under intense investigation in condensed matter physics. Practical applications include acoustic geophysical survey, medical imaging, testing of new composite and porous materials, solar collector design, etc. Modern physical phenomena which are involved include percolation, fractional dimension structures, and Anderson localization. The basic physics underlying wave propagation and flow in random media will be experimentally studied using an ideal liquid, superfluid helium, permeating a random system. In particular, fourth sound propagating in various random porous media and third sound in a superfluid film on a random substrate will be investigated.