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 |
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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