6533b7d0fe1ef96bd125a3fe
RESEARCH PRODUCT
Vortex density waves and high-frequency second sound in superfluid turbulence hydrodynamics
Michele SciaccaDavid JouMaria Stella Mongiovìsubject
PhysicsNon-equilibrium thermodynamicsTurbulenceQuantum vortexFOS: Physical sciencesGeneral Physics and AstronomyNon-equilibrium thermodynamicsVorticityLiquid helium IISuperfluid turbulenceVortexCondensed Matter - Other Condensed MatterSuperfluidityClassical mechanicsSecond soundSettore MAT/07 - Fisica MatematicaSuperfluid helium-4Other Condensed Matter (cond-mat.other)description
In this paper 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-08-25 |