Wave turbulence in quantum fluids
Wave turbulence in quantum fluids
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DOI：
10.1073/pnas.1312575110
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发表时间：
2014-03-25
影响因子：
11.1
通讯作者：
Nazarenko, Sergey V.
中科院分区：
文献类型：
--
作者：
Kolmakov, German V.;McClintock, Peter Vaughan Elsmere;Nazarenko, Sergey V.
波湍流（WT）发生在强烈相互作用的非线性波的系统中，并且可以导致跨长度和频率尺度的能量流，就像在涡旋湍流中众所周知的那样。通常，能量通过非耗散惯性范围，直到它达到足够小的尺度，粘度变得重要，并通过将能量耗散为热量来终止级联。量子流体中的波湍流特别令人感兴趣，部分原因是揭示性实验可以在实验室规模上进行，部分原因是量子化涡旋上的开尔文波中的WT被认为在（涡旋）衰减的最后阶段发挥着至关重要的作用。量子湍流。在这篇简短的评论中，我们提供了一个关于量子流体中WT的最新工作的观点，将其置于背景中并讨论了未来几年的前景。我们概述了理论，简要回顾了迄今为止使用液体H-2和液体He-4进行的实验，并讨论了一些非平衡激子超流体，其中WT已被预测，但尚未观察到实验。最后，我们考虑了该领域的中长期前景。
Wave turbulence (WT) occurs in systems of strongly interacting nonlinear waves and can lead to energy flows across length and frequency scales much like those that are well known in vortex turbulence. Typically, the energy passes although a nondissipative inertial range until it reaches a small enough scale that viscosity becomes important and terminates the cascade by dissipating the energy as heat. Wave turbulence in quantum fluids is of particular interest, partly because revealing experiments can be performed on a laboratory scale, and partly because WT among the Kelvin waves on quantized vortices is believed to play a crucial role in the final stages of the decay of (vortex) quantum turbulence. In this short review, we provide a perspective on recent work on WT in quantum fluids, setting it in context and discussing the outlook for the next few years. We outline the theory, review briefly the experiments carried out to date using liquid H-2 and liquid He-4, and discuss some nonequilibrium excitonic superfluids in which WT has been predicted but not yet observed experimentally. By way of conclusion, we consider the medium-and longer-term outlook for the field.