Spectral energy transport in two-dimensional quantum vortex dynamics

Billam, T. P., Reeves, M. T. and Bradley, A. S. (2015) Spectral energy transport in two-dimensional quantum vortex dynamics. Physical Review A, 91 2: . doi:10.1103/PhysRevA.91.023615

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Author Billam, T. P.
Reeves, M. T.
Bradley, A. S.
Title Spectral energy transport in two-dimensional quantum vortex dynamics
Journal name Physical Review A   Check publisher's open access policy
ISSN 1094-1622
2469-9926
Publication date 2015-02-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.91.023615
Open Access Status File (Publisher version)
Volume 91
Issue 2
Total pages 6
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract We explore the possible regimes of decaying two-dimensional quantum turbulence, and elucidate the nature of spectral energy transport by introducing a dissipative point-vortex model with phenomenological vortex-sound interactions. The model is valid for a large system with weak dissipation, and also for systems with strong dissipation, and allows us to extract a meaningful and unambiguous spectral energy flux associated with quantum vortex motion. For weak dissipation and large system size we find a regime of hydrodynamic vortex turbulence in which energy is transported to large spatial scales, resembling the phenomenology of the transient inverse cascade observed in decaying turbulence in classical incompressible fluids. For strong dissipation the vortex dynamics are dominated by dipole recombination and exhibit no appreciable spectral transport of energy.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
 
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