Two-dimensional quantum turbulence in a nonuniform Bose-Einstein condensate

T. L. Horng, C. H. Hsueh, S. W. Su, Y. M. Kao, S. C. Gou

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Abstract

We investigate the dynamics of turbulent flow in a two-dimensional trapped Bose-Einstein condensate by solving the Gross-Pitaevskii equation numerically. The development of the quantum turbulence is activated by the disruption of an initially embedded vortex quadrupole. By calculating the incompressible kinetic-energy spectrum of the superflow, we conclude that this quantum turbulent state is characterized by the Kolmogorov-Saffman scaling law in the wave-number space. Our study predicts the coexistence of two subinertial ranges responsible for the energy cascade and enstrophy cascade in this prototype of two-dimensional quantum turbulence.

Original languageEnglish
Article number023618
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number2
DOIs
Publication statusPublished - 2009 Aug 24

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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