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 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Two-dimensional quantum turbulence in a nonuniform Bose-Einstein condensate. / Horng, T. L.; Hsueh, C. H.; Su, S. W.; Kao, Y. M.; Gou, S. C.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 80, No. 2, 023618, 24.08.2009.Research output: Contribution to journal › Article
TY - JOUR
T1 - Two-dimensional quantum turbulence in a nonuniform Bose-Einstein condensate
AU - Horng, T. L.
AU - Hsueh, C. H.
AU - Su, S. W.
AU - Kao, Y. M.
AU - Gou, S. C.
PY - 2009/8/24
Y1 - 2009/8/24
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=69249104554&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=69249104554&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.80.023618
DO - 10.1103/PhysRevA.80.023618
M3 - Article
AN - SCOPUS:69249104554
VL - 80
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 2
M1 - 023618
ER -