Kelvin-wave turbulence generated by vortex reconnections

Details Kelvin-wave turbulence generated by vortex reconnections Kelvin-wave turbulence generated by vortex reconnections

2006-10-16

arxiv.org/abs/cond-mat/0610420v1

Physics

Condensed Matter

Other Condensed Matter

To be submitted to JETP Letters

Scientific paper

Reconnections of quantum vortex filaments create sharp bends which degenerate into propagating Kelvin waves. These waves cascade their energy down-scale and their waveaction up-scale via weakly nonlinear interactions, and this is the main mechanism of turbulence at the scales less than the inter-vortex distance. In case of an idealised forcing concentrated around a single scale k0, the turbulence spectrum exponent has a pure direct cascade form -17/5 at scales k>k0 and a pure inverse cascade form -3 at k

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