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Polish Academy of Sciences

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Miron Kursa

University of Warsaw (PL)


Recent publications
1.  Kursa M., Bajer K., Lipniacki T., Cascade of vortex loops initiated by a single reconnection of quantum vortices, PHYSICAL REVIEW B, ISSN: 1098-0121, DOI: 10.1103/PhysRevB.83.014515, Vol.83, pp.014515-1-5, 2011

Abstract:
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.

Affiliations:
Kursa M. - University of Warsaw (PL)
Bajer K. - other affiliation
Lipniacki T. - IPPT PAN

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