Vortex density waves and high-frequency second sound in superfluid turbulence hydrodynamics

D. Jou, M. S. Mongiovì, M. Sciacca

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10 Citations (Scopus)

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. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)7-12
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume368
DOIs
Publication statusPublished - 13 Aug 2007

Keywords

  • Liquid helium II
  • Non-equilibrium thermodynamics
  • Superfluid turbulence

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