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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

This summary is machine-generated.

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.

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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.