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Emergence of Isotropy and Dynamic Scaling in 2D Wave Turbulence in a Homogeneous Bose Gas

Maciej Gałka, Panagiotis Christodoulou, Martin Gazo, Andrey Karailiev, Nishant Dogra, Julian Schmitt, and Zoran Hadzibabic
Phys. Rev. Lett. 129, 190402 – Published 4 November 2022
Physics logo See synopsis: Birth of Turbulence Captured for a Quantum Gas
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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.

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  • 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)

Atomic, Molecular & OpticalGeneral PhysicsFluid Dynamics

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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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Authors & Affiliations

Maciej Gałka1,*, Panagiotis Christodoulou1, Martin Gazo1, Andrey Karailiev1, Nishant Dogra1, Julian Schmitt1,2, and Zoran Hadzibabic1

  • 1Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
  • 2Institut für Angewandte Physik, Universität Bonn, Wegelerstraße 8, 53115 Bonn, Germany

  • *Corresponding author. mg850@cam.ac.uk

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Issue

Vol. 129, Iss. 19 — 4 November 2022

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