Characteristics of two-dimensional quantum turbulence in a compressible superfluid

Neely, T. W., Bradley, A. S., Samson, E. C., Rooney, S. J., Wright, E. M., Law, K. J. H., Carretero-Gonzalez, R., Kevrekidis, P. G., Davis, M. J. and Anderson, B. P. (2013) Characteristics of two-dimensional quantum turbulence in a compressible superfluid. Physical Review Letters, 111 23: 235301.1-235301.6. doi:10.1103/PhysRevLett.111.235301

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Author Neely, T. W.
Bradley, A. S.
Samson, E. C.
Rooney, S. J.
Wright, E. M.
Law, K. J. H.
Carretero-Gonzalez, R.
Kevrekidis, P. G.
Davis, M. J.
Anderson, B. P.
Title Characteristics of two-dimensional quantum turbulence in a compressible superfluid
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
1079-7114
Publication date 2013-12-02
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.111.235301
Open Access Status File (Publisher version)
Volume 111
Issue 23
Start page 235301.1
End page 235301.6
Total pages 6
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Subject 3100 Physics and Astronomy
Abstract Fluids subjected to suitable forcing will exhibit turbulence, with characteristics strongly affected by the fluid's physical properties and dimensionality. In this work, we explore two-dimensional (2D) quantum turbulence in an oblate Bose-Einstein condensate confined to an annular trapping potential. Experimentally, we find conditions for which small-scale stirring of the condensate generates disordered 2D vortex distributions that dissipatively evolve toward persistent currents, indicating energy transport from small to large length scales. Simulations of the experiment reveal spontaneous clustering of same-circulation vortices and an incompressible energy spectrum with k -5/3 dependence for low wave numbers k. This work links experimentally observed vortex dynamics with signatures of 2D turbulence in a compressible superfluid.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
 
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