Reconnection dynamics and mutual friction in quantum turbulence

Jason Laurie, Andrew W. Baggaley

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We investigate the behaviour of the mutual friction force in finite temperature quantum turbulence in 4He, paying particular attention to the role of quantized vortex reconnections. Through the use of the vortex filament model, we produce three experimentally relevant types of vortex tangles in steady-state conditions, and examine through statistical analysis, how local properties of the tangle influence the mutual friction force. Finally, by monitoring reconnection events, we present evidence to indicate that vortex reconnections are the dominant mechanism for producing areas of high curvature and velocity leading to regions of high mutual friction, particularly for homogeneous and isotropic vortex tangles.
Original languageEnglish
Pages (from-to)82-94
Number of pages13
JournalJournal of Low Temperature Physics
Issue number1-2
Early online date8 Jan 2015
Publication statusPublished - Jul 2015

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