Velocity statistics distinguish quantum turbulence from classical turbulence

M. S. Paoletti, Michael E. Fisher, K. R. Sreenivasan, D. P. Lathrop

Research output: Contribution to journalArticle

Abstract

By analyzing trajectories of solid hydrogen tracers, we find that the distributions of velocity in decaying quantum turbulence in superfluid He4 are strongly non-Gaussian with 1/v3 power-law tails. These features differ from the near-Gaussian statistics of homogenous and isotropic turbulence of classical fluids. We examine the dynamics of many events of reconnection between quantized vortices and show by simple scaling arguments that they produce the observed power-law tails.

Original languageEnglish (US)
Article number154501
JournalPhysical Review Letters
Volume101
Issue number15
DOIs
StatePublished - Oct 6 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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