In this Letter we show that a recent hydrodynamical model of superfluid turbulence describes vortex density waves and their effects on the speed of high-frequency second sound. In this frequency regime, the vortex dynamics is not purely diffusive, as for low frequencies, but exhibits ondulatory features, whose influence on the second sound is here explored.
Jou, D., Mongiovi', M., Sciacca, M. (2007). Vortex Density Waves and High-Frequency Second Sound in Superfluid Turbulence Hydrodynamics. PHYSICS LETTERS A, 368, 7-12 [doi:10.1016/j.physleta.2007.03.078].
Vortex Density Waves and High-Frequency Second Sound in Superfluid Turbulence Hydrodynamics
MONGIOVI', Maria Stella;SCIACCA, Michele
2007-01-01
Abstract
In this Letter we show that a recent hydrodynamical model of superfluid turbulence describes vortex density waves and their effects on the speed of high-frequency second sound. In this frequency regime, the vortex dynamics is not purely diffusive, as for low frequencies, but exhibits ondulatory features, whose influence on the second sound is here explored.
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