Ultra-quantum turbulence in a quenched homogeneous Bose gas

Abstract

Using the classical field method, we study numerically the characteristics and decay of the turbulent tangle of superfluid vortices which is created in the evolution of a Bose gas from highly nonequilibrium initial conditions. By analysing the vortex line density, the energy spectrum and the velocity correlation function, we determine that the turbulence resulting from this effective thermal quench lacks the coherent structures and the Kolmogorov scaling; these properties are typical of both ordinary classical fluids and of superfluid helium when driven by grids or propellers. Instead, thermal quench turbulence has properties akin to a random flow, more similar to another turbulent regime called ultra-quantum turbulence which has been observed in superfluid helium.

arXiv comment7 pages, 5 figures

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• Kelvin-Helmholtz instability in an atomic superfluid
• Coherent and incoherent structures in fuzzy dark matter halos
• Decay of homogeneous two dimensional quantum turbulence
• Quantum ferrofluid turbulence
• Turbulence Excitation in Counter-Streaming Paraxial Superfluids of Light
• Quantum turbulence in Bose-Einstein condensates: present status and new challenges ahead
• Visualization of quantum turbulence in superfluid ${}^3$He-B: Combined numerical/experimental study of Andreev reflection
• Mesoscale helicity distinguishes Vinen from Kolmogorov turbulence in helium II
• Dissipation and Decay of Three Dimensional Holographic Quantum Turbulence
• Simulating Quantum Turbulence with Matrix Product States
• Co-rotating Vortices on Surfaces of Variable Negative Curvature: Hamiltonian Structure and Curvature-Induced Drift