5 papers
Quantum vortex driven Kelvin wave in the thermal background of superfluid helium
Simone Scollo, Luca Galantucci, Giorgio Krstulovic
We present numerical evidence that Kelvin waves (KWs) on quantized vortices in superfluid helium can be directly observed in the normal fluid component at finite temperatures. Usin…
Reproducible nucleation and control of stable quantum vortex rings in Bose-Einstein condensates
Giorgia Iori, Klejdja Xhani, Woo Jin Kwon +2
We propose and numerically validate an experimentally feasible on-demand protocol for the nucleation and manipulation of stable quantum vortex rings in trapped Bose-Einstein conden…
Inverse energy transfer in three-dimensional quantum vortex flows
Piotr Z. Stasiak, Andrew Baggaley, Carlo. F. Barenghi +2
Vortex reconnections play a fundamental role in fluids.They increase the complexity of flow and develop small-scale motions.In this work, we report that in superfluids, they can al…
Quantum vortices leave a macroscopic signature in the normal fluid
Luca Galantucci, Giorgio Krstulovic, Carlo F Barenghi
Recent work has highlighted the remarkable properties of quantum turbulence in superfluid helium II, consisting of a disordered tangle of quantised vortex lines which interact with…
Experimental and theoretical evidence of universality in superfluid vortex reconnections
Piotr Z. Stasiak, Yiming Xing, Yousef Alihosseini +5
The minimum separation between reconnecting vortices in fluids and superfluids obeys a universal scaling law with respect to time. The pre-reconnection and the post-reconnection pr…