Abstract
We realize a turbulent cascade of wave excitations in a homogeneous 2D Bose gas and probe on all relevant time and length scales how it builds up from small to large momenta, until the system reaches a steady state with matching energy injection and dissipation. This all-scales view directly reveals the two theoretically expected cornerstones of turbulence formation—the emergence of statistical momentum-space isotropy under anisotropic forcing and the spatiotemporal scaling of the momentum distribution at times before any energy is dissipated.
- Received 28 May 2022
- Revised 24 August 2022
- Accepted 14 September 2022
DOI:https://doi.org/10.1103/PhysRevLett.129.190402
© 2022 American Physical Society
Physics Subject Headings (PhySH)
synopsis
Birth of Turbulence Captured for a Quantum Gas
Published 4 November 2022
The observation of the onset of turbulence in a gas of bosons allows researchers to explore how turbulence comes to life.
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