A Nonequilibrium Equation of State for a Turbulent 2D Bose Gas

• URL: http://arxiv.org/abs/2602.06131v1
• Date: Thu, 05 Feb 2026 19:05:17 GMT
• Title: A Nonequilibrium Equation of State for a Turbulent 2D Bose Gas
• Authors: Yi Jiang, Nikolai Maslov, Andrey Karailiev, Christoph Eigen, Martin Gazo, Zoran Hadzibabic,
• Abstract summary: We experimentally construct an equation for a direct energy cascade in a turbulent two-dimensional Bose gas.<n>Our equation of state links the cascade amplitude with the underlying scale-invariant energy flux.
• Score: 7.685576599102702
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Nonequilibrium equations of state can provide an effective thermodynamic-like description of far-from-equilibrium systems. We experimentally construct such an equation for a direct energy cascade in a turbulent two-dimensional Bose gas. Our homogeneous gas is continuously driven on a large length scale and, with matching dissipation on a small length scale, exhibits a nonthermal but stationary power-law momentum distribution. Our equation of state links the cascade amplitude with the underlying scale-invariant energy flux, and can, for different drive strengths, gas densities, and interaction strengths, be recast into a universal power-law form using scalings consistent with the Gross-Pitaevskii model.

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