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.

7 pages, 5 figures

References in corpus (10)

• Spontaneous vortices in the formation of Bose-Einstein condensates
• Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
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• Finite Temperature Models of Bose-Einstein Condensation
• Observation of Solitonic Vortices in Bose-Einstein Condensates
• Quantum and quasiclassical types of superfluid turbulence
• Turbulent velocity spectra in superfluid flows
• Dissipative dynamics of superfluid vortices at non-zero temperatures
• Many-body physics in the classical-field description of a degenerate Bose gas
• Equilibration of a finite temperature binary Bose gas formed by population transfer

Cited by in corpus (5)

• 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
• 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