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

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

2010-09-04

arxiv.org/abs/1009.0823v1

Physics

Condensed Matter

Other Condensed Matter

9 pages, 5 figures, submitted to APS (preprint)

Scientific paper

10.1103/PhysRevB.83.014515

We demonstrate that a single reconnection of two quantum vortices can lead to creation of a cascade of vortex rings. Our analysis, motivated by the analytical solution in LIA, involves 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. So created vortex rings may penetrate the tangle and annihilate on the boundaries. This provides an efficient mechanism of the vortex tangle decay in very low temperatures.

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