On the Kelvin-Helmholtz instability in superfluids

On the Kelvin-Helmholtz instability in superfluids
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关于超流体中的开尔文-亥姆霍兹不稳定性

DOI:
10.1134/1.1490014
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发表时间:
2002
期刊:
Journal of Experimental and Theoretical Physics Letters
影响因子:
--
通讯作者:
G. Volovik
G. Volovik
中科院分区:
--
文献类型:
--
作者:
G. Volovik

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在首次实验观测到3 He-A/3 He-B界面上的Kelvin-Helmholtz不稳定性的基础上,讨论了超流中的Kelvin-Helmholtz不稳定性。Blaauwgeers,V. B.叶利佐夫湾Eska等人,cond-mat/0111343)。我们讨论了为什么Kelvin-Helmholtz准则,朗道临界速度的成核的波纹,和自由能的考虑都给出了不同的值的不稳定性阈值。
The Kelvin-Helmholtz instability in superfluids is discussed on the basis of the first experimental observation of such an instability at the interface between superfluid 3He-A and superfluid 3He-B (R. Blaauwgeers, V. B. Eltsov, G. Eska et al., cond-mat/0111343). We discuss why the Kelvin-Helmholtz criterion, the Landau critical velocity for nucleation of ripplons, and the free-energy consideration all give different values for the instability threshold.