Emergence of turbulence in an oscillating Bose-Einstein condensate

Details Emergence of turbulence in an oscillating Bose-Einstein condensate Emergence of turbulence in an oscillating Bose-Einstein condensate

2009-04-16

arxiv.org/abs/0904.2564v2

Phys. Rev. Lett. 103, 045301 (2009)

Physics

Condensed Matter

Quantum Gases

accepted for Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.103.045301

We report on the experimental observation of vortices tangle in an atomic BEC of Rb-87 atoms when an external oscillatory perturbation is introduced in the trap. The vortices tangle configuration is a signature of the presence of a turbulent regime in the cloud. We also show that this turbulent cloud has suppression of the aspect ratio inversion typically observed in quantum degenerate bosonic gases during free expansion. Instead, the cloud expands keeping the ratio between their axis constant. Turbulence in atomic superfluids may constitute an alternative system to investigate decay mechanisms as well as to test fundamental theoretical aspects in this field.

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