Cascade of vortex loops initiated by a single reconnection of quantum vortices

被引：45
|
作者：
Kursa, Miron [1 ]
Bajer, Konrad [2 ]
Lipniacki, Tomasz [3 ]
机构：
[1] Univ Warsaw, Interdisciplinary Ctr Math & Computat Modelling, Warsaw, Poland
[2] Univ Warsaw, Fac Phys, Warsaw, Poland
[3] Inst Fundamental Technol Res, PL-00049 Warsaw, Poland
来源：
PHYSICAL REVIEW B | 2011年 / 83卷 / 01期
关键词：
LOW-TEMPERATURE LIMIT; SUPERFLUID TURBULENCE; INDUCTION APPROXIMATION; DYNAMICS; HE-4;
D O I：
10.1103/PhysRevB.83.014515
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We demonstrate that a single reconnection of two quantum vortices can lead to the creation of a cascade of vortex rings. Our analysis involves localized induction approximation, high-resolution Biot-Savart and Gross-Pitaevskii simulations. The latter showed that the rings cascade starts on the atomic scale, with rings diameters orders of magnitude smaller than the characteristic line spacing in the tangle. Vortex rings created in the cascades may penetrate the tangle and annihilate on the boundaries. This provides an efficient decay mechanism for sparse or moderately dense vortex tangle at very low temperatures.
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页数：5
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