Velocity-Dependent Forces and Non-Hydrodynamic Initial Conditions in Quantum and Classical Fluids

T. R. Kirkpatrick; D. Belitz

doi:10.1140/epjs/s11734-023-01032-y

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arXiv · 2304.06157

Velocity-Dependent Forces and Non-Hydrodynamic Initial Conditions in Quantum and Classical Fluids

T. R. Kirkpatrick·D. Belitz

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Abstract

We consider a fermionic fluid in a non-equilibrium steady state where the fluctuation-dissipation theorem is not valid and fields conjugate to the hydrodynamic variables are explicitly required to determine response functions. We identify velocity-dependent forces in the kinetic equation that are equivalent to such fields. They lead to driving terms in the hydrodynamic equations and to corrections to the hydrodynamic initial conditions.

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T. R. Kirkpatrick, D. Belitz. 2023-04-12. Velocity-Dependent Forces and Non-Hydrodynamic Initial Conditions in Quantum and Classical Fluids. https://doi.org/10.1140/epjs/s11734-023-01032-y

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