Home > Research > Publications & Outputs > Wave turbulence in quantum fluids

Associated organisational unit

Electronic data

Links

Text available via DOI:

View graph of relations

Wave turbulence in quantum fluids

Research output: Contribution to journalJournal articlepeer-review

Published
<mark>Journal publication date</mark>25/03/2014
<mark>Journal</mark>Proceedings of the National Academy of Sciences of the United States of America
Issue numberSuppl No 1
Volume111
Number of pages8
Pages (from-to)4727–4734
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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 H2 and liquid 4He, 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 forthe field.