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Open Quantum Systems Decoherence

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

arXiv
Authors: Yi Jiang, Nikolai Maslov, Andrey Karailiev, Christoph Eigen, Martin Gazo, Zoran Hadzibabic

Year

2026

Paper ID

2767

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

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.

Why This Paper Matters

  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • Nonequilibrium equations of state can provide an effective thermodynamic-like description of far-from-equilibrium systems.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2602.06131 [2] arXiv https://arxiv.org/abs/2602.06131 [3] Publisher https://arxiv.org/abs/2602.06131

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