Transition to quantum turbulence in a finite size superfluid

Abstract

A novel concept of quantum turbulence in finite size superfluids, such as trapped bosonic atoms, is discussed. We have used an atomic ${}^{87}\mathrm{Rb}$ BEC to study the emergence of this phenomenon. In our experiment, the transition to the quantum turbulent regime is characterized by a tangled vortex lines formation, controlled by the amplitude and time duration of the excitation produced by an external oscillating field. A simple model is suggested to account for the experimental observations. The transition from the non-turbulent to the turbulent regime is a rather gradual crossover. But it takes place in a sharp enough way, allowing for the definition of an effective critical line separating the regimes. Quantum turbulence emerging in a finite-size superfluid may be a new idea helpful for revealing important features associated to turbulence, a more general and broad phenomenon.

References in corpus (5)

• Emergence of turbulence in an oscillating Bose-Einstein condensate
• Cold Bosons in Optical Lattices
• Quantum Turbulence in a Trapped Bose-Einstein Condensate
• Observation of vortex formation in an oscillating trapped Bose-Einstein condensate
• Hydrodynamics of Bose and Fermi superfluids at zero temperature: the superfluid nonlinear Schrodinger equation

Cited by in corpus (1)

• Route to turbulence in a trapped Bose-Einstein condensate