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arXiv · 2404.14292

Navier-Stokes equations for nearly integrable quantum gases

Maciej Łebek·Miłosz Panfil
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Abstract

The Navier-Stokes equations are paradigmatic equations describing hydrodynamics of an interacting system with microscopic interactions encoded in transport coefficients. In this work we show how the Navier-Stokes equations arise from the microscopic dynamics of nearly integrable $1d$ quantum many-body systems. We build upon the recently developed hydrodynamics of integrable models to study the effective Boltzmann equation with collision integral taking into account the non-integrable interactions. We compute the transport coefficients and find that the resulting Navier-Stokes equations have two regimes, which differ in the viscous properties of the fluid. We illustrate the method by computing the transport coefficients for an experimentally relevant case of coupled $1d$ cold-atomic gases.

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BibTeXRIS

Maciej Łebek, Miłosz Panfil. 2024-04-22. Navier-Stokes equations for nearly integrable quantum gases. https://doi.org/10.1103/physrevlett.134.010405

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