Hydrodynamic decay of decorated quantum vortex rings

Moriconi, L.

doi:10.1016/j.physleta.2021.127409

Cited by 1 publication

(1 citation statement)

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“…However, it is well known that the trapped particles can result in additional forces on the vortex core [39][40][41] , which needs to be considered when simulating the ring's motion. Following Mineda et al 39 (see Methods), we consider the Stokes drag 1 f D = − 6πaμ n (u L − u n ), the gravitational force, and the inertial effect of each trapped particle on the ring.…”

Section: Data Analysis and Model Comparisonmentioning

confidence: 99%

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

et al. 2023

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The motion of quantized vortices is responsible for many intriguing phenomena in diverse quantum-fluid systems. Having a theoretical model to reliably predict the vortex motion therefore promises a broad significance. But a grand challenge in developing such a model is to evaluate the dissipative force caused by thermal quasiparticles in the quantum fluids scattering off the vortex cores. Various models have been proposed, but it remains unclear which model describes reality due to the lack of comparative experimental data. Here we report a visualization study of quantized vortex rings propagating in superfluid helium. By examining how the vortex rings spontaneously decay, we provide decisive data to identify the model that best reproduces observations. This study helps to eliminate ambiguities about the dissipative force acting on vortices, which could have implications for research in various quantum-fluid systems that also involve similar forces, such as superfluid neutron stars and gravity-mapped holographic superfluids.

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