Hydrodynamic Decay of Decorated Quantum Vortex Rings

L. Moriconi

doi:10.1016/j.physleta.2021.127409

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arXiv · 2103.10278

Hydrodynamic Decay of Decorated Quantum Vortex Rings

L. Moriconi

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Abstract

The decay of quantum vortex rings in counterflow regimes, visualized in Helium II with the help of solid hydrogen particles trapped to their cores, has been a puzzling issue within the usual description of superfluid vortex dynamics, grounded on the hypothesis that a vortex filament is, effectively, an extended massless object subject to a canceling superposition of Magnus and mutual friction forces. We discuss, from a general energy-budget point of view, a phenomenological solution of this problem, which relies on viscous and quantum dissipation mechanisms, the later associated to the backreaction of vortex singular structures on the surrounding two-component fluid mixture.

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L. Moriconi. 2021-03-18. Hydrodynamic Decay of Decorated Quantum Vortex Rings. https://doi.org/10.1016/j.physleta.2021.127409

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