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Published on: August 2, 2019
Binary quantum turbulence arising from countersuperflow instability in two-component Bose-Einstein condensates
Hiromitsu Takeuchi1, Shungo Ishino, Makoto Tsubota
1Department of Physics, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan.
Physical Review Letters
|January 15, 2011
Summary
Quantum turbulence develops from two counter-propagating Bose-Einstein condensates when their relative velocity exceeds a critical threshold, forming quantized vortices and isotropic binary turbulence. This phenomenon is achievable in experimental trapped systems.
Area of Science:
- Quantum turbulence
- Bose-Einstein condensates
- Superfluidity
Background:
- Quantum turbulence is a key phenomenon in superfluid dynamics.
- Understanding its development is crucial for quantum fluid research.
Purpose of the Study:
- To theoretically investigate the emergence of quantum turbulence.
- To analyze the dynamics of two counter-propagating superfluids.
Main Methods:
- Numerical solution of coupled Gross-Pitaevskii equations.
- Simulation of miscible Bose-Einstein condensates.
Main Results:
- Instability of counter-propagating superfluids above a critical velocity.
- Nucleation of quantized vortices leading to isotropic turbulence.
- Formation of binary turbulence from two superflows.
Conclusions:
- Quantum turbulence can be generated from counter-propagating superfluids.
- The described binary turbulence is experimentally realizable in trapped systems.
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