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 language | English |
|---|---|
| Article number | 023618 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 80 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 Aug 24 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Cite this
Horng, T. L., Hsueh, C. H., Su, S. W., Kao, Y. M., & Gou, S. C. (2009). Two-dimensional quantum turbulence in a nonuniform Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics, 80(2), [023618]. https://doi.org/10.1103/PhysRevA.80.023618