Kelvin waves cascade in superfluid turbulence.

Kivotides D, Vassilicos JC, Samuels DC, Barenghi CF
Phys Rev Lett. 2001 86 (14): 3080-3

PMID: 11290112 · DOI:10.1103/PhysRevLett.86.3080

We study numerically the interaction of four initial superfluid vortex rings in the absence of any dissipation or friction. We find evidence for a cascade of Kelvin waves generated by individual vortex reconnection events which transfers energy to higher and higher wave numbers k. After the vortex reconnections occur, the energy spectrum scales as k(-1) and the curvature spectrum becomes flat. These effects highlight the importance of Kelvin waves and reconnections in the transfer of energy within a turbulent vortex tangle.

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